Improve speed

[rom1504]

Generate protocol schemas instead of validating each type independently.
I think it would make validation much faster.
Test using mcdata protocol.json

[rom1504]

https://circleci.com/gh/PrismarineJS/minecraft-data/490
vs
https://circleci.com/gh/PrismarineJS/minecraft-data/489

10x slower

0.1 is ok
1s is too slow.

[rom1504]

Actually I think 1s is fine.

Improving speed might be doable, but not so important. Not doing that now and deploying.