More Chest Variants Compatibility

[lieonlion]

LieOnLion/More-Chest-Variants#20

When using FastChest with my mod, More Chest Variants, it renders and extra chest always facing north, and double chests have two single chests.

[FakeDomi]

Hi, two things need to be done. On my side: adding something like https://github.com/FakeDomi/FastChest/blob/master/src/main/java/re/domi/fastchest/mixin/BlockEntityRenderDispatcherMixin.java#L28 to the BER dispatcher, I think I should add an API there. On your side: something like https://github.com/4nner/IronChests/pull/20/files, adding explicit rotation models to your blockstates.