Many source file name and data type are prefixed by "skeleton" before, now all are refactored.
The class MeshResultContext represents the outcome of mesh generation before, now we have material, pose and animation, so we just rename it as Outcome.
Use https://github.com/Thekla/thekla_atlas to generate the texture.
This commit still have some issues, some faces not satisfy thekla_atlas in some cases.
- Add texture preview widget.
- Fix single node black color issue.
- Export texture in .gltf file.
- Fix node order random issue in mesh generation.
Jeremy Hu