Missing features for AnimComposer and Action tween

[Ali-RS]

AnimComposer and Action tween can be improved to support these functionalities :
looping (on/off), fastForward(time), getTime(), getRemaining(), cancel(), getPercentRemaining(), ...
As they are available in Lemur AnimationState, TweenAnimation

https://github.com/jMonkeyEngine-Contributions/Lemur/blob/master/src/main/java/com/simsilica/lemur/anim/TweenAnimation.java

[Ali-RS]

Looping is added in #1845