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_ballance_map_info.py

@@ -22,7 +22,8 @@ class BBP_PG_ballance_map_info(bpy.types.PropertyGroup):
         default = 1,
         max = 999, min = 1,
         soft_max = 8, soft_min = 1,
-        step = 1
+        step = 1,
+        translation_context = 'BBP_PG_ballance_map_info/property'
     ) # type: ignore
     
 def get_ballance_map_info(scene: bpy.types.Scene) -> BBP_PG_ballance_map_info:
@@ -51,6 +52,7 @@ class BBP_PT_ballance_map_info(bpy.types.Panel):
     bl_space_type = 'PROPERTIES'
     bl_region_type = 'WINDOW'
     bl_context = "scene"
+    bl_translation_context = 'BBP_PT_ballance_map_info'
     
     @classmethod
     def poll(cls, context):