Main: NodeAnimationTrack - add setUseLocalTranslation

[chillywillysoft]

Allows to select local space for translations on NodeAnimationTrack.

More focused version of #2840 that doesn't affect rotations and only allows choosing between parent and local.

[paroj]

@chillywillysoft after having looked at it some more:
could the same not be achieved by introducing an intermediate scene node to orient the animation? i.e.

animation(local) -> node(rotated)
== 
node(rotated)  -> [animation(parent) -> node]

[chillywillysoft]

@paroj Yes, that would work. I didn't want to introduce the extra node. But doing it that way (with the extra node) actually makes it almost identical to how I handle Skeletal animations that cause movement, so that sounds like a good idea.