have lobby schedule ffa, teams, & special game types (#3196)

## Description:

This implements the backend for multiple lobbies in preparation for
https://github.com/openfrontio/OpenFrontIO/pull/3191

The server now schedules & sends a map of game type (ffa, teams,
special) => public lobbies.

NOTE: this is just temporary, the lobby only shows ffa currently.

Have the Master scheduler schedule ffa, teams, & special games. 

## 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:

evan

src/server/GameManager.ts

@@ -8,7 +8,7 @@ import {
   GameMode,
   GameType,
 } from "../core/game/Game";
-import { GameConfig, GameID } from "../core/Schemas";
+import { GameConfig, GameID, PublicGameType } from "../core/Schemas";
 import { Client } from "./Client";
 import { GamePhase, GameServer } from "./GameServer";
 
@@ -57,6 +57,7 @@ export class GameManager {
     gameConfig: GameConfig | undefined,
     creatorPersistentID?: string,
     startsAt?: number,
+    publicGameType?: PublicGameType,
   ) {
     const game = new GameServer(
       id,
@@ -83,6 +84,7 @@ export class GameManager {
       },
       creatorPersistentID,
       startsAt,
+      publicGameType,
     );
     this.games.set(id, game);
     return game;