- add TinyMutex to resolve the issue that we can not operate the virtools group infos of 2 individual objects.
* use this new class for all class need resource mutex, such as ballance element, bme materials and etc.
- add CollectionVisitor to resolve that blender have bad document and type hint for runtime bpy.types.CollectionProperty.
* now all visit to CollectionProperty are delegated by this class.
- fix issus that legacy align can not align object with non-1 scale factors.
- refactor some functions in legacy align to have better looking.
- fix issus that legacy fail to align objects since second executing by forcely updating view layer.
- now grouping, ungrouping clear groups operators will show a report at the bottom of blender to indicate their work have done.
- disable fix material, 3ds max align, select by virtools group operators in edit mode to prevent any possible undefined behavior.
bring ballance virtools helper used fix_texture (renamed as fix material to correspond with the real object operated by this function) into blender plugin.
- disable bmx import/export temporaryly
- optimize the ui display of importing/exporting. (use box to organize props)
- place button horizontally, not vertically in virtools material.
- disallow apply in legacy align if no axis selected.
- add applied step counter in legacy alignment.
- add feedback for reseting bme material/component. (add a message box to show success)
