SkinsRestorer

🐛 Fixes

• 936ad8b fix: small refactors & split paper and spigot mappings
• 62368e8 fix: do not mark as spigot mapping

🏗 Refactor

• 28eb882 refactor: improve variable naming

🔨 Build

• 33c9002 chore(release): bump version to 15.12.2-SNAPSHOT
• 11a0a1e chore: split more mappings
• 6ade361 chore: make mappings more paper-proof
• 5872d07 chore(release): bump version to 15.12.2

💅 Style

• c7b9093 style: optimize imports