Add remove_player method.

src/utils/Game.ts

@@ -27,7 +27,14 @@ export class Game {
 		this.#players[player] = {
 			position: undefined,
 			role: undefined,
-			host: is_host
+			host: is_host,
+		};
+	};
+
+	public remove_player(player: string, ban: boolean): void {
+		delete this._players[player];
+		if (ban) {
+			this.banned_players.push(player);
 		};
 	};