adds map of the Great Lakes (#3588)

## Description:

Highly requested map. Map of the 5 Great Lakes (Superior, Michigan,
Huron, Erie and Ontario) with adjacent rivers and lakes. Local cities
and towns as nations / NPCs.


https://github.com/user-attachments/assets/157346fa-e3e6-4d63-9f51-46bae002d529

(Kinda obvious we needed this location at some point)

## 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:

tri.star1011

src/core/game/Game.ts

@@ -146,6 +146,7 @@ export enum GameMapType {
   MilkyWay = "MilkyWay",
   Mediterranean = "Mediterranean",
   Dyslexdria = "Dyslexdria",
+  GreatLakes = "Great Lakes",
 }
 
 export type GameMapName = keyof typeof GameMapType;
@@ -198,6 +199,7 @@ export const mapCategories: Record<string, GameMapType[]> = {
     GameMapType.SanFrancisco,
     GameMapType.Aegean,
     GameMapType.Mediterranean,
+    GameMapType.GreatLakes,
   ],
   fantasy: [
     GameMapType.Pangaea,