Panda3D glTF Utilities

`panda3d-gltf` provides utilities to load glTF (GL Transmission Format) 3D models into the Panda3D engine. It handles parsing glTF files and converting their data (meshes, materials, textures, animations, scenes) into Panda3D's native scene graph format, simplifying the process of integrating glTF assets. The current version is 1.3.0, with releases occurring as needed for fixes and feature enhancements, rather than on a fixed schedule.