feat: update virtools file importer and exporter

- use panel to organise property group in virtools file importer and exporter.
- move all ballance params and virtools params into ioport_shared module and enable different showcase according to the argument passed to show function presenting whether current window is importer or exporter.
- add multiple type ignore to ignore the error of bpy operator member field type hints.

bbp_ng/PROP_bme_material.py

@@ -73,12 +73,12 @@ class BBP_PG_bme_material(bpy.types.PropertyGroup):
     bme_material_name: bpy.props.StringProperty(
         name = "Name",
         default = ""
-    )
+    ) # type: ignore
     
     material_ptr: bpy.props.PointerProperty(
         name = "Material",
         type = bpy.types.Material
-    )
+    ) # type: ignore
 
 def get_bme_materials(scene: bpy.types.Scene) -> bpy.types.CollectionProperty:
     return scene.bme_materials