Add resource skin file provide protocol
Add resource pack item skin support
Add enable server skin in the resource pack option
Fix skin rendering z-fighting issue (1.16-1.21)
Fix emabbed skin item renderer crash issue (1.16-1.21)
NOTE: 1.16 requires java 16 now.
Fix block skin encode issue (beta.15-beta.18)
NOTE: 1.16 requires java 16 now.