Add Giant World Map (#845)

## Description:
Adds giant world map. Uses same nations as former world map. Does not
include translations beyond English.
## Please complete the following:

- [x] I have added screenshots for all UI updates
- [x] I confirm I have thoroughly tested these changes and take full
responsibility for any bugs introduced
- [x] I understand that submitting code with bugs that could have been
caught through manual testing blocks releases and new features for all
contributors

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

1brucben

---------

Co-authored-by: evanpelle <evanpelle@gmail.com>

src/client/utilities/Maps.ts

@@ -21,6 +21,7 @@ import northAmerica from "../../../resources/maps/NorthAmericaThumb.webp";
 import oceania from "../../../resources/maps/OceaniaThumb.webp";
 import pangaea from "../../../resources/maps/PangaeaThumb.webp";
 import southAmerica from "../../../resources/maps/SouthAmericaThumb.webp";
+import worldmapgiant from "../../../resources/maps/WorldMapGiantThumb.webp";
 import world from "../../../resources/maps/WorldMapThumb.webp";
 
 import { GameMapType } from "../../core/game/Game";
@@ -29,6 +30,8 @@ export function getMapsImage(map: GameMapType): string {
   switch (map) {
     case GameMapType.World:
       return world;
+    case GameMapType.WorldMapGiant:
+      return worldmapgiant;
     case GameMapType.Oceania:
       return oceania;
     case GameMapType.Europe: