Adds Irish Sea map (#4546)

## Description:

Adds map of the Irish Sea: https://en.wikipedia.org/wiki/Irish_Sea

A relatively small-medium size map of 970k tiles, centered around Isle
of Man (slightly modified to be more centered), surrounded in all sides
by land.

Since all trade will go around the island, this will create crazy strong
pirate players, which have become popular thanks to Youtubers and the
Tradeship buff in v32.

19 default nations, with 43 extra nations for a total of 62, for the
Humans vs Nations gamemode and Solo games.


https://github.com/user-attachments/assets/18e0ee2c-8d7f-4ce7-813c-2e7c64d75acc

## Please complete the following:

- [x] I have added screenshots for all UI updates
- [x] I process any text displayed to the user through translateText()
and I've added it to the en.json file
- [x] I have added relevant tests to the test directory

## Please put your Discord username so you can be contacted if a bug or
regression is found:

tri.star1011

resources/countries.json

@@ -554,6 +554,11 @@
     "continent": "North America",
     "name": "Cherokee"
   },
+  {
+    "code": "GB-CHE",
+    "continent": "Europe",
+    "name": "Cheshire"
+  },
   {
     "code": "Chickasaw",
     "continent": "North America",
@@ -722,6 +727,11 @@
     "continent": "North America",
     "name": "Cuba"
   },
+  {
+    "code": "GB-CMA",
+    "continent": "Europe",
+    "name": "Cumbria"
+  },
   {
     "code": "cw",
     "continent": "South America",
@@ -1271,6 +1281,11 @@
     "continent": "Europe",
     "name": "Ireland"
   },
+  {
+    "code": "Ireland Green Harp",
+    "continent": "Europe",
+    "name": "Green Harp"
+  },
   {
     "code": "Haudenosaunee",
     "continent": "North America",
@@ -1426,6 +1441,11 @@
     "continent": "Asia",
     "name": "Kingdom of Iraq"
   },
+  {
+    "code": "Kingdom of Ireland",
+    "continent": "Europe",
+    "name": "Kingdom of Ireland"
+  },
   {
     "code": "italy",
     "continent": "Europe",
@@ -1530,6 +1550,11 @@
     "continent": "North America",
     "name": "Lakotah"
   },
+  {
+    "code": "GB-LAN",
+    "continent": "Europe",
+    "name": "Lancashire"
+  },
   {
     "code": "la",
     "continent": "Asia",
@@ -1797,6 +1822,11 @@
     "continent": "Europe",
     "name": "Mercia"
   },
+  {
+    "code": "GB-Merseyside",
+    "continent": "Europe",
+    "name": "Merseyside"
+  },
   {
     "code": "mx",
     "continent": "North America",

resources/lang/en.json

@@ -963,6 +963,7 @@
     "hongkong": "Hong Kong",
     "iceland": "Iceland",
     "indiansubcontinent": "Indian Subcontinent",
+    "irishsea": "Irish Sea",
     "italia": "Italia",
     "japan": "Japan",
     "juandefucastrait": "Juan De Fuca Strait",

resources/maps/irishsea/manifest.json

@@ -0,0 +1,337 @@
+{
+  "additionalNations": [
+    {
+      "coordinates": [170, 1199],
+      "flag": "ie",
+      "name": "Dun Laoghaire"
+    },
+    {
+      "coordinates": [195, 1248],
+      "flag": "ie",
+      "name": "Bray"
+    },
+    {
+      "coordinates": [190, 1488],
+      "flag": "ie",
+      "name": "Arklow"
+    },
+    {
+      "coordinates": [27, 1255],
+      "flag": "ie",
+      "name": "Naas"
+    },
+    {
+      "coordinates": [137, 935],
+      "flag": "ie",
+      "name": "Drogheda"
+    },
+    {
+      "coordinates": [77, 865],
+      "flag": "ie",
+      "name": "Ardee"
+    },
+    {
+      "coordinates": [9, 1003],
+      "flag": "ie",
+      "name": "Navan"
+    },
+    {
+      "coordinates": [6, 665],
+      "flag": "ie",
+      "name": "Monaghan"
+    },
+    {
+      "coordinates": [360, 408],
+      "flag": "northern_ireland",
+      "name": "Bangor"
+    },
+    {
+      "coordinates": [118, 522],
+      "flag": "northern_ireland",
+      "name": "Portadown"
+    },
+    {
+      "coordinates": [211, 595],
+      "flag": "northern_ireland",
+      "name": "Banbridge"
+    },
+    {
+      "coordinates": [186, 372],
+      "flag": "northern_ireland",
+      "name": "Antrim"
+    },
+    {
+      "coordinates": [308, 281],
+      "flag": "northern_ireland",
+      "name": "Larne"
+    },
+    {
+      "coordinates": [59, 123],
+      "flag": "northern_ireland",
+      "name": "Coleraine"
+    },
+    {
+      "coordinates": [382, 4],
+      "flag": "gb-sct",
+      "name": "Campbeltown"
+    },
+    {
+      "coordinates": [783, 242],
+      "flag": "gb-sct",
+      "name": "Wigtown"
+    },
+    {
+      "coordinates": [752, 122],
+      "flag": "gb-sct",
+      "name": "Newton Stewart"
+    },
+    {
+      "coordinates": [668, 23],
+      "flag": "gb-sct",
+      "name": "Girvan"
+    },
+    {
+      "coordinates": [1149, 111],
+      "flag": "gb-sct",
+      "name": "Lockerbie"
+    },
+    {
+      "coordinates": [1267, 181],
+      "flag": "gb-sct",
+      "name": "Gretna"
+    },
+    {
+      "coordinates": [1106, 402],
+      "flag": "GB-CMA",
+      "name": "Workington"
+    },
+    {
+      "coordinates": [1214, 404],
+      "flag": "GB-CMA",
+      "name": "Cockermouth"
+    },
+    {
+      "coordinates": [1229, 471],
+      "flag": "GB-CMA",
+      "name": "Keswick"
+    },
+    {
+      "coordinates": [1334, 397],
+      "flag": "GB-CMA",
+      "name": "Penrith"
+    },
+    {
+      "coordinates": [1287, 547],
+      "flag": "GB-CMA",
+      "name": "Windermere"
+    },
+    {
+      "coordinates": [1333, 598],
+      "flag": "GB-CMA",
+      "name": "Kendal"
+    },
+    {
+      "coordinates": [1378, 644],
+      "flag": "GB-CMA",
+      "name": "Kirkby Lonsdale"
+    },
+    {
+      "coordinates": [1218, 705],
+      "flag": "GB-CMA",
+      "name": "Barrow-in-Furness"
+    },
+    {
+      "coordinates": [1262, 1045],
+      "flag": "GB-Merseyside",
+      "name": "Sefton"
+    },
+    {
+      "coordinates": [1261, 1164],
+      "flag": "GB-Merseyside",
+      "name": "Wirral"
+    },
+    {
+      "coordinates": [1352, 1091],
+      "flag": "GB-Merseyside",
+      "name": "Knowsley"
+    },
+    {
+      "coordinates": [1335, 753],
+      "flag": "GB-LAN",
+      "name": "Morecambe"
+    },
+    {
+      "coordinates": [1284, 899],
+      "flag": "GB-LAN",
+      "name": "Blackpool"
+    },
+    {
+      "coordinates": [1300, 1011],
+      "flag": "GB-LAN",
+      "name": "Ormskirk"
+    },
+    {
+      "coordinates": [1390, 1192],
+      "flag": "GB-CHE",
+      "name": "Warrington"
+    },
+    {
+      "coordinates": [717, 1197],
+      "flag": "gb-wls",
+      "name": "Holyhead"
+    },
+    {
+      "coordinates": [994, 1218],
+      "flag": "gb-wls",
+      "name": "Conwy"
+    },
+    {
+      "coordinates": [865, 1397],
+      "flag": "gb-wls",
+      "name": "Portmadoc"
+    },
+    {
+      "coordinates": [781, 1432],
+      "flag": "gb-wls",
+      "name": "Pwllheli"
+    },
+    {
+      "coordinates": [1069, 1372],
+      "flag": "gb-wls",
+      "name": "Betws-y-Coed"
+    },
+    {
+      "coordinates": [1259, 1247],
+      "flag": "gb-wls",
+      "name": "Queensferry"
+    },
+    {
+      "coordinates": [1209, 1405],
+      "flag": "gb-wls",
+      "name": "Llangollen"
+    },
+    {
+      "coordinates": [854, 1303],
+      "flag": "gb-wls",
+      "name": "Caernarfon"
+    }
+  ],
+  "categories": ["europe", "new"],
+  "id": "IrishSea",
+  "map": {
+    "height": 1500,
+    "num_land_tiles": 978363,
+    "width": 1400
+  },
+  "map16x": {
+    "height": 375,
+    "num_land_tiles": 58780,
+    "width": 350
+  },
+  "map4x": {
+    "height": 750,
+    "num_land_tiles": 241209,
+    "width": 700
+  },
+  "multiplayer_frequency": 5,
+  "name": "Irish Sea",
+  "nations": [
+    {
+      "coordinates": [771, 744],
+      "flag": "im",
+      "name": "Isle of Man"
+    },
+    {
+      "coordinates": [1380, 914],
+      "flag": "GB-LAN",
+      "name": "Preston"
+    },
+    {
+      "coordinates": [109, 779],
+      "flag": "ie",
+      "name": "Dundalk"
+    },
+    {
+      "coordinates": [163, 1096],
+      "flag": "ie",
+      "name": "Dublin"
+    },
+    {
+      "coordinates": [212, 1392],
+      "flag": "ie",
+      "name": "Wicklow"
+    },
+    {
+      "coordinates": [1326, 206],
+      "flag": "GB-CMA",
+      "name": "Carlisle"
+    },
+    {
+      "coordinates": [259, 467],
+      "flag": "northern_ireland",
+      "name": "Belfast"
+    },
+    {
+      "coordinates": [143, 236],
+      "flag": "northern_ireland",
+      "name": "Ballymena"
+    },
+    {
+      "coordinates": [1326, 776],
+      "flag": "GB-LAN",
+      "name": "Lancaster"
+    },
+    {
+      "coordinates": [1323, 1142],
+      "flag": "GB-Merseyside",
+      "name": "Liverpool"
+    },
+    {
+      "coordinates": [1108, 477],
+      "flag": "GB-CMA",
+      "name": "Whitehaven"
+    },
+    {
+      "coordinates": [903, 1268],
+      "flag": "gb-wls",
+      "name": "Bangor"
+    },
+    {
+      "coordinates": [1108, 1222],
+      "flag": "gb-wls",
+      "name": "St Asaph"
+    },
+    {
+      "coordinates": [1301, 1329],
+      "flag": "gb-wls",
+      "name": "Wrexham"
+    },
+    {
+      "coordinates": [927, 266],
+      "flag": "gb-sct",
+      "name": "Kirkcudbright"
+    },
+    {
+      "coordinates": [603, 274],
+      "flag": "gb-sct",
+      "name": "Stranraer"
+    },
+    {
+      "coordinates": [1128, 116],
+      "flag": "gb-sct",
+      "name": "Dumfries"
+    },
+    {
+      "coordinates": [22, 553],
+      "flag": "northern_ireland",
+      "name": "Armagh"
+    },
+    {
+      "coordinates": [139, 698],
+      "flag": "northern_ireland",
+      "name": "Newry"
+    }
+  ],
+  "special_team_count": 3,
+  "translation_key": "map.irishsea"
+}