Performance Improvements

[md5sha256]

I haven't tested/benchmarked the changes of this PR on a live server just yet.

This PR adds non-breaking performance improvements in various places.

• Pasting schematics should be faster, owing to fewer calls to Math.floorDiv and not needing to create a new Location object for each block being pasted.
• Not doing physics updates when padting schematics
• (More of a micro-optimisation here), List<Material> which only have contains calls have been replaced with EnumSet

[WalshyDev]

Stated comments in Discord but otherwise looks alright.

[md5sha256]

So basic benchmark:

3786 (omit because JIT?), 3233 (omit . . .), 1168, 1028, 1021 (10k schem pastes, with physics)

793, 766, 789, 1305, 807 (10k schem pastes without physics)

all units in ms. So roughly a 30% performance improvement

code used to test: here
the blocks were reset (/fill air) and entities killed (/kill @e[type=!player]) between runs