USD1 fixes and also start to impliment an editor for USD1.
Fix L8 and LA8 displaying.
Fix channel compents. Temporaily uses the swizzle parameter. Todo, do these by shader.
Material saving fixes for bflyt version 8 and higher
Adjust drag and drop support a bit from archives so it doesn't have any issues.
Added BRLYT viewing (very basic)
Fix U8 not adding all the directories. Hopefully any U8 will work correctly now