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Changes:

• eef4d6f Add render controllers file codecs, use ENTITY_ALPHATEST material for default textures in attachables by @eclipseisoffline
• 3162a57 Support arrays property in render controllers by @eclipseisoffline
• 50f5904 TextureSerializer simplification by @eclipseisoffline
• 8faaa2d Proper animated texture support in TextureResource by @eclipseisoffline
• c4eb802 Refactor StitchedTextures into ModelTextures with animated texture support, sort of by @eclipseisoffline
• bc58814 Work on caching ModelTextures by @eclipseisoffline
• 37b6d0b Refactor: handle pack serialization through PackSerializer#Serializable, rework TextureSerializer into PackPaths by @eclipseisoffline
• 5e5d7f2 Refactor MappedGeometryCache to use PackAssetCache, get rid of stitched and icon TextureHolders in MappedGeometry by @eclipseisoffline
• e8698b3 Refactor: continue work on moving to ModelTextures interface by @eclipseisoffline
• f21451f Export render controllers and all animation frames for an animation, temporarily export animations for layer0 models, create BedrockAttachableContext by @eclipseisoffline
• 0b650b8 Load TextureResource for SingleTexture only when loading and saving, don't implement AutoCloseable on ModelTextures by @eclipseisoffline
• 79dcb71 Map custom flat 2D builtin/generated model when required by ModelTextures by @eclipseisoffline
• 6680be0 AnimationMapper/display transform mapping improvements by @eclipseisoffline
• d1b1f8a Crude implementation of time component in flipbook animations, specify textures in flat 2D builtin/generated model to prevent warnings in game logs by @eclipseisoffline
• 4cd3832 Add attachables for equippables back in with priority, support generating attachables for custom elytra by @eclipseisoffline ... and 4 more