Adds map "Tierra del Fuego" (featuring impassable terrain) (#4437)

## Description:

Adds map of Tierra del Fuego, the southernmost tip of South America:
https://en.wikipedia.org/wiki/Tierra_del_Fuego

This map uses impassable terrain to stylize the borders of this map into
a triangular shape, this zone is known as "end of the world" so i
thought it would be visually fitting if the borders converged at the
bottom of the map.

800k land tiles similar to Caucasus.

This map has a lot of islands, incluiding the Falklands for people who
enjoy island-plays, and also a chokepoint (the strait of Magallanes) for
piracy.

Also adds flags of Chilean and Argentinian provinces for the map and the
menu.

<img width="818" height="544" alt="image"
src="https://github.com/user-attachments/assets/59812868-7514-4e03-86a2-072cf4013aeb"
/>


https://github.com/user-attachments/assets/acc15020-bd7a-49e0-a504-8575a1e74f75

## 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

map-generator/assets/maps/tierradelfuego/info.json

@@ -0,0 +1,109 @@
+{
+  "id": "TierraDelFuego",
+  "name": "Tierra Del Fuego",
+  "translation_key": "map.tierradelfuego",
+  "categories": ["south_america", "new"],
+  "multiplayer_frequency": 5,
+  "nations": [
+    {
+      "coordinates": [1320, 945],
+      "name": "Rio Grande",
+      "flag": "Tierra del Fuego"
+    },
+    {
+      "coordinates": [1283, 1153],
+      "name": "Ushuaia",
+      "flag": "Tierra del Fuego"
+    },
+    {
+      "coordinates": [1452, 1118],
+      "name": "Tolhuin",
+      "flag": "Tierra del Fuego"
+    },
+    {
+      "coordinates": [2226, 351],
+      "name": "Falkland Islands",
+      "flag": "fk"
+    },
+    {
+      "coordinates": [1181, 536],
+      "name": "Rio Gallegos",
+      "flag": "Santa Cruz"
+    },
+    {
+      "coordinates": [1200, 204],
+      "name": "Puerto Santa Cruz",
+      "flag": "Santa Cruz"
+    },
+    {
+      "coordinates": [790, 251],
+      "name": "El Calafate",
+      "flag": "Santa Cruz"
+    },
+    {
+      "coordinates": [1039, 22],
+      "name": "Gobernador Gregores",
+      "flag": "Santa Cruz"
+    },
+    {
+      "coordinates": [1340, 24],
+      "name": "San Julian",
+      "flag": "Santa Cruz"
+    },
+    {
+      "coordinates": [759, 505],
+      "name": "Puerto Natales",
+      "flag": "Magallanes"
+    },
+    {
+      "coordinates": [1363, 1209],
+      "name": "Puerto Williams",
+      "flag": "Magallanes"
+    },
+    {
+      "coordinates": [929, 849],
+      "name": "Punta Arenas",
+      "flag": "Magallanes"
+    },
+    {
+      "coordinates": [1057, 848],
+      "name": "Porvenir",
+      "flag": "Magallanes"
+    },
+    {
+      "coordinates": [755, 368],
+      "name": "Cerro Castillo",
+      "flag": "Magallanes"
+    },
+    {
+      "coordinates": [471, 15],
+      "name": "Puerto Eden",
+      "flag": "Magallanes"
+    },
+    {
+      "coordinates": [910, 609],
+      "name": "Laguna Blanca",
+      "flag": "Magallanes"
+    },
+    {
+      "coordinates": [1086, 972],
+      "name": "Timaukel",
+      "flag": "Magallanes"
+    },
+    {
+      "coordinates": [1162, 782],
+      "name": "Primavera",
+      "flag": "Magallanes"
+    },
+    {
+      "coordinates": [815, 721],
+      "name": "Rio Verde",
+      "flag": "Magallanes"
+    },
+    {
+      "coordinates": [1029, 666],
+      "name": "San Gregorio",
+      "flag": "Magallanes"
+    }
+  ]
+}