added alternate game mode "movingWalls"

src/client/gameLoop.ts

@@ -2,6 +2,7 @@
 import * as c from "./constants.js";
 import * as en from "../shared_js/enums.js"
 import { gc, clientInfo } from "./global.js";
+import { wallsMovements } from "../shared_js/wallsMovement.js";
 
 let actual_time: number = Date.now();
 let last_time: number;
@@ -26,6 +27,10 @@ function gameLoop()
 	gc.ballsArr.forEach((ball) => {
 		ball.moveAndBounce(delta_time, [gc.wallTop, gc.wallBottom, gc.playerLeft, gc.playerRight]);
 	});
+
+	if (c.optionsPLACEHOLDER & en.MatchOptions.movingWalls) {
+		wallsMovements(delta_time, gc);
+	}
 }
 
 function opponentInterpolation(delta: number)