Refactor some classes (its not need to implement fix mcmod.info garbled text for 1.12.2, because already fixed in forge code.)

Added fix mcmod.info garbled text issues (issue #3)

Added fix mcmod.info garbled text issues (issue #3)

Replace GTNH Custom Main Menu code with asm to fix splashes.txt Garbled characters.(issue https://github.com/Yukkuritaku/unicode-fix/issues/2)

*There are no changes to 1.12.2 and 1.8.9.

Replaced mixin to asm