Function update_flip

update_flip(gameObject: GameObject, flip: FlipXY): GameObject
Updates the flip state of the GameObject.
Parameters
- gameObject: GameObject
  GameObject reference
- flip: FlipXY
  The [x, y] flip state as a boolean array
Returns GameObject
the GameObject reference passed in
Example
```
update_flip(create_triangle(100, 100), [false, true]);
```