Rainbow

Changes:

• 93192a2 Rename and relocate item mapping definitions by @eclipseisoffline
• d1fba6f Create records and codecs for Geyser block mappings by @eclipseisoffline
• 2b15670 Create builders for new block mapping classes by @eclipseisoffline
• b5c08d3 Store GeyserBlockMappings in BedrockPack, small Serializable refactors by @eclipseisoffline
• 0dee86f Simplify PackPaths by @eclipseisoffline
• d70ccd6 Start working on creating Geyser block mappings by @eclipseisoffline
• d2f54fc Allow selecting specific block states to map by @eclipseisoffline
• beb2c45 Work on properly mapping materials and exporting terrain textures and atlas by @eclipseisoffline
• 4880281 Abstract ModelTextures for use with both blocks and items by @eclipseisoffline
• 5922c65 Use max texture size for width and height of BlockModelTextures by @eclipseisoffline
• d3c6816 Make sure item icon textures and block textures don't conflict, properly map full block geometry and single materials by @eclipseisoffline
• 8eeb6c3 Work on implementing flipbook textures for blocks by @eclipseisoffline
• b932fc2 Clean up animation handling in SingleTexture by @eclipseisoffline
• 45ef40c Support exporting flipbook_textures.json for blocks with flipbook textures by @eclipseisoffline
• af2d6d9 Reduce size of generated texture atlases by re-using textures, clean up texture path handling by @eclipseisoffline ... and 6 more