Add users to game room when they create a game.

src/events/HostGame.ts

@@ -25,6 +25,9 @@ export const HostGame = (socket: Socket, data: HostGame) => {
 			game_code = generate_game_code();
 		}
 
+		// Add the user to the game's room
+		socket.join(game_code);
+
 		let game = new Game(game_code, data.username)
 
 		active_games[game_code] = game;