Add utility function to ItemStack for creating custom PlayerHeads #2005

Job	Run time
Unused Dependencies	3m 10s
Dependency Graph (assets/depgraph.svg)	25s
Typos	4s
Build Extractor	1m 51s
Clippy	1m 32s
Documentation	1m 0s
Formatting	14s
Miri Tests	3m 14s
Tests (windows-latest)	9m 17s
Tests (macos-latest)	9m 17s
Tests (ubuntu-latest)	9m 35s
	39m 39s

Provide feedback