Implement native opening scenes, battle foundation and overworld movement

src/game/world/types.ts

@@ -41,7 +41,12 @@ export interface GameMap {
   id: string;
   group: number;
   number: number;
+  /** Ported-area label, or the ROM location name. */
   name: string;
+  /** The ROM landmark name shown by the game's own map. */
+  location: string;
+  /** The landmark index (caught data and GetWorldMapLocation). */
+  landmark: number;
   width: number;
   height: number;
   border: number;