Create addScenePushHandler

Author: DeveloperTryingToCodeLikeOtherOfThem

docs/reference/game/addScenePushHandler

@@ -0,0 +1,12 @@
+## addScenePushHandler
+Registers a handler that runs whenever a scene is pushed onto the scene stack.
+
+## Example
+Add a new sprite when the handler is registered.
+``` ts
+   game.addScenePushHandler(() => {
+        let mySprite = sprites.create(img`509509505950950`, SpriteKind.Player);
+   })
+
+   game.pushScene(); // push the scene to register it
+```