Add Baikal map (fixed) (#690)

## Description:
This PR adds the "Baikal" map which is a cutout from the whole real life
lake, as the lake itself is very large vertically and wouldn't make as a
very good map by itself. This map has some rivers and a very big sort of
water body that seperates the map in two(it was kind of designed for the
teams gamemode). It's nations are some features around that region.

## Please complete the following:

- [ ] 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:

Nikola123

src/client/components/Maps.ts

@@ -27,6 +27,7 @@ export const MapDescription: Record<keyof typeof GameMapType, string> = {
   FaroeIslands: "Faroe Islands",
   DeglaciatedAntarctica: "Deglaciated Antarctica",
   FalklandIslands: "Falkland Islands",
+  Baikal: "Baikal",
 };
 
 @customElement("map-display")

src/client/utilities/Maps.ts

@@ -1,6 +1,7 @@
 import africa from "../../../resources/maps/AfricaThumb.webp";
 import asia from "../../../resources/maps/AsiaThumb.webp";
 import australia from "../../../resources/maps/AustraliaThumb.webp";
+import baikal from "../../../resources/maps/BaikalThumb.webp";
 import betweenTwoSeas from "../../../resources/maps/BetweenTwoSeasThumb.webp";
 import blackSea from "../../../resources/maps/BlackSeaThumb.webp";
 import britannia from "../../../resources/maps/BritanniaThumb.webp";
@@ -69,6 +70,8 @@ export function getMapsImage(map: GameMapType): string {
       return deglaciatedAntarctica;
     case GameMapType.FalklandIslands:
       return falklandislands;
+    case GameMapType.Baikal:
+      return baikal;
     default:
       return "";
   }