Better EnumLoader performance

[LasmGratel]

Currently, our EnumLoader has a O(n logn) performance, it is too worse to register such extreme items. We should have less Map#values() eached and compress the query time.

[LasmGratel]

Unfortunately, multi-threaded parallelStream() is unusable in Minecraft loading logics, so it would be impossible to speed up with multi-threading feature.

However, caching IItemColor or other registerable objects are also effective to reduce memory usages.