[Sub-Issue] Implement remaining FlixelTweenTypes

[stringdotjar]

While there are ONESHOT and PERSIST implemented, the others (such as PINGPONG and LOOPING) are not yet used.

The goal is to include the BACKWARD, LOOPING and PINGPONG tween types to allow further control of the tweening system.

Sources:

https://api.haxeflixel.com/flixel/tweens/FlxTweenType.html