FPBR-Voxel potion

The model of various pations has been modified to be more three-dimensional, and the effect of FPBR has been adapted

The three-dimensional potions have become visible in the inventory, including items and drops!

The 3D model has a normal map that is fully compatible with FPBR.

Please turn on the entity normal switch of your shader program; otherwise, the normal and PBR will not take effect！