Firmament for Hypixel SkyBlock

Full Changelog: https://github.com/nea89o/Firmament/compare/2.5.0+mc1.21.4...2.6.0+mc1.21.4

• feat: pickaxe ability ready toast ~kath
• fix: CastPredicate compatibility not working
• fix: Re-implement head_model with the new model format
• fix: Armor predicates not being loaded correctly
• feat: Add generic component matcher
• feat: Add *base64 and *json nbt path matchers
• feat: Add skull parser