Minecraft 1.21 support

[Hendrix-Shen]

Features

For Minecraft 1.21 (Resolve #78)

• [x] Fabric
• [ ] Forge (The architectury loom toolchain doesn't currently do this) [^1]
• [x] NeoForge

Development

• Add cleanRuns related tasks
• Disable the forge-like runMixinAudit task in order to make ./gradlew runMixinAuditClient working
• Standardised Dependency Definitions

[^1]: Consider dropping Forge(1.20.6) support？