Feat: Tournament Maps (#3483)

## Description:

Introduces 4 new private match maps for the OFM tournament in May.
Includes 2, 3, 4, and 8 player maps. Playtested, and include as many
default nations as the map expects players, named after compass points.
Give it a try at https://tourney-maps.openfront.dev/

<img width="1500" height="1500" alt="image"
src="https://github.com/user-attachments/assets/9138b636-5dd7-4118-82e2-50a5125a7963"
/>

The base images were created from scratch based on prototype designs,
and they were converted from vector versions I made. I haven't decided
on what the names should be for the maps themselves, so for now they're
just `Tourney Map 1`, `Tourney Map 2`, etc. Ideas welcome.


## 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
- [x] I confirm I have thoroughly tested these changes and take full
responsibility for any bugs introduced

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

bijx

resources/maps/tourney1/manifest.json

@@ -0,0 +1,28 @@
+{
+  "map": {
+    "height": 1500,
+    "num_land_tiles": 984577,
+    "width": 1500
+  },
+  "map16x": {
+    "height": 375,
+    "num_land_tiles": 60237,
+    "width": 375
+  },
+  "map4x": {
+    "height": 750,
+    "num_land_tiles": 244567,
+    "width": 750
+  },
+  "name": "Tourney1",
+  "nations": [
+    {
+      "coordinates": [177, 510],
+      "name": "Left"
+    },
+    {
+      "coordinates": [847, 511],
+      "name": "Right"
+    }
+  ]
+}

resources/maps/tourney2/manifest.json

@@ -0,0 +1,32 @@
+{
+  "map": {
+    "height": 1500,
+    "num_land_tiles": 1024327,
+    "width": 1500
+  },
+  "map16x": {
+    "height": 375,
+    "num_land_tiles": 62691,
+    "width": 375
+  },
+  "map4x": {
+    "height": 750,
+    "num_land_tiles": 254300,
+    "width": 750
+  },
+  "name": "Tourney2",
+  "nations": [
+    {
+      "coordinates": [339, 987],
+      "name": "South West"
+    },
+    {
+      "coordinates": [1162, 990],
+      "name": "South East"
+    },
+    {
+      "coordinates": [750, 278],
+      "name": "North"
+    }
+  ]
+}

resources/maps/tourney3/manifest.json

@@ -0,0 +1,36 @@
+{
+  "map": {
+    "height": 1500,
+    "num_land_tiles": 1008007,
+    "width": 1500
+  },
+  "map16x": {
+    "height": 375,
+    "num_land_tiles": 61644,
+    "width": 375
+  },
+  "map4x": {
+    "height": 750,
+    "num_land_tiles": 250191,
+    "width": 750
+  },
+  "name": "Tourney3",
+  "nations": [
+    {
+      "coordinates": [437, 410],
+      "name": "North West"
+    },
+    {
+      "coordinates": [1066, 408],
+      "name": "North East"
+    },
+    {
+      "coordinates": [433, 1088],
+      "name": "South West"
+    },
+    {
+      "coordinates": [1068, 1075],
+      "name": "South East"
+    }
+  ]
+}

resources/maps/tourney4/manifest.json

@@ -0,0 +1,52 @@
+{
+  "map": {
+    "height": 1500,
+    "num_land_tiles": 905705,
+    "width": 1500
+  },
+  "map16x": {
+    "height": 375,
+    "num_land_tiles": 54860,
+    "width": 375
+  },
+  "map4x": {
+    "height": 750,
+    "num_land_tiles": 224342,
+    "width": 750
+  },
+  "name": "Tourney4",
+  "nations": [
+    {
+      "coordinates": [568, 309],
+      "name": "North North West"
+    },
+    {
+      "coordinates": [308, 562],
+      "name": "West North West"
+    },
+    {
+      "coordinates": [945, 303],
+      "name": "North North East"
+    },
+    {
+      "coordinates": [1188, 556],
+      "name": "East North East"
+    },
+    {
+      "coordinates": [1196, 931],
+      "name": "East South East"
+    },
+    {
+      "coordinates": [941, 1178],
+      "name": "South South East"
+    },
+    {
+      "coordinates": [564, 1185],
+      "name": "South South West"
+    },
+    {
+      "coordinates": [315, 927],
+      "name": "West South West"
+    }
+  ]
+}