Cornbread's Music Fixer (Java Style)

This and pervious versions of the pack are not compatible with versions 1.20.3+

• Updated pack_format to 15.
• Added 'A Familiar Room' to music.game.
• Removed menu music easter egg.
• Reorganized Lush Caves json.
• Swamps now only play Swamp Music.
• Removed unused custom swamp sound event 'cause i couldn't get its data pack to work.
• Added changelog.txt.
• Deserts and Badlands no longer play 'One More Day.'
• Forests, Flower Forests, Jungles, Bamboo Jungles, and Sparse Jungles now (effectively) use music.game.
• Replaced "C418 plays more." in the pack description with the version number.