feat: Add getGameSettings to GameManager type.

Author: Firebottle

types/modules/game-manager.d.ts

@@ -98,4 +98,5 @@ export type GameManager = {
    * @param game that should be registered.
    */
   registerGame: (game: FirebotGame) => void;
+  getGameSettings: (string) => GameSettings;
 };