Smeltery IO

Changelog:

• Remove mixin from manifest
• Add issue templates
• Add configurable coolant items
• Fix mixin relic in release
• Fix version in mods screen
• Add cooldown to SI
• Code formatting and TE fixes
• Iceball better particles
• Fix up json models
• Sided mixin is only allowed in DEV
• Fix GUI for CM modes
• TE Optimizations
• Internal mod rename to fix TE registration issues
• TE Improvements
• Fix up registration code and additional warnings
• Get mod working in dev again