- update blender_manifest.toml to the latest version and fix the issues raised by blender when packaging.
- use blender do packaging work. remove redist.py because blender_manifest.toml has gitignore like filter feature when packaging.
- update document about installing, configurating, building plugin for blender 4.2.
- update a document image for blender 4.2.
- finish uv section of doc.
- fix issue about the wrong calc of coordinate system axis vector in flatten uv (change it from left hand to right hand).
- fix rail uv display text.
