Render blocks and items held by armor stands

[MicycleBichael]

Carpets (and maybe other blocks, haven't tested) are "unknown blocks" when held by armor stands. As such, the texture and model doesn't load.

[ThisIsBrady]

Currently, armor stands only support having armor. Chunky can't render blocks and items that the armor stand holds.

[MicycleBichael]

@073TheBoss thanks for the info!