Refactor player and room to support adding effects.

State.ts

@@ -0,0 +1,13 @@
+import { GameData, SceneProperties } from "./types.ts";
+import Player from "./Player.ts";
+import Scene from "./Scene.ts";
+
+export class State {
+	#player: Player;
+	#scene: Scene;
+
+	constructor(gameData: GameData<SceneProperties>) {
+		this.#player = new Player();
+		this.#scene = new Scene(gameData);
+	}
+}