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

src/core/game/Maps.gen.ts

@@ -86,6 +86,7 @@ export enum GameMapType {
   Svalmel = "Svalmel", // map-generator/assets/maps/svalmel/info.json
   TaiwanStrait = "Taiwan Strait", // map-generator/assets/maps/taiwanstrait/info.json
   TheBox = "The Box", // map-generator/assets/maps/thebox/info.json
+  TierraDelFuego = "Tierra Del Fuego", // map-generator/assets/maps/tierradelfuego/info.json
   Titan = "Titan", // map-generator/assets/maps/titan/info.json
   Tourney1 = "Tourney 2 Teams", // map-generator/assets/maps/tourney1/info.json
   Tourney2 = "Tourney 3 Teams", // map-generator/assets/maps/tourney2/info.json
@@ -763,6 +764,13 @@ export const maps: readonly MapInfo[] = [
     categories: ["arcade"],
     multiplayerFrequency: 3,
   },
+  {
+    id: "TierraDelFuego",
+    type: GameMapType.TierraDelFuego,
+    translationKey: "map.tierradelfuego",
+    categories: ["south_america", "new"],
+    multiplayerFrequency: 5,
+  },
   {
     id: "Titan",
     type: GameMapType.Titan,