RotatedAnimationVariations on SimpleEntity(WithOwner)Protoype

[Osmo]

Simple entities already support graphics variations by defining pictures or animations. They also support rotated sprites in the form of picture. However there is no way to get both rotations and variations at the same time.
There is a data type for this already: RotatedAnimationVariations, however the only protoypes supporting it are CorpsePrototype and ProjectilePrototype, both of which have other side effects making them not useful.
It would be good if simple entities also supported RotatedAnimationVariations, as it seems like one of the most versatile graphics types there is, even for other use cases.