feat: add translation context for operators and their properties.

- add translation context for operator, menu, panel and etc. and their associated properties.
- improve some name and description but not finished.
- move reset BME material function inside BMEMaterialsHelper.
- rename variable of collection visitor in BME adder operator for clear meaning.
- replace some message box to report in ballance elements reset operator, BME materials reset operator and rail UV operator

bbp_ng/PROP_virtools_mesh.py

@@ -24,7 +24,8 @@ class BBP_PG_virtools_mesh(bpy.types.PropertyGroup):
         name = "Lit Mode",
         description = "Lighting mode of the mesh.",
         items = _g_Helper_VXMESH_LITMODE.generate_items(),
-        default = _g_Helper_VXMESH_LITMODE.to_selection(RawVirtoolsMesh.cDefaultLitMode)
+        default = _g_Helper_VXMESH_LITMODE.to_selection(RawVirtoolsMesh.cDefaultLitMode),
+        translation_context = 'BBP_PG_virtools_mesh/property'
     ) # type: ignore
     
 # Getter Setter
@@ -54,6 +55,7 @@ class BBP_PT_virtools_mesh(bpy.types.Panel):
     bl_space_type = 'PROPERTIES'
     bl_region_type = 'WINDOW'
     bl_context = "data" # idk why blender use `data` as the mesh tab.
+    bl_translation_context = 'BBP_PT_virtools_mesh'
     
     @classmethod
     def poll(cls, context):