Start of the Major Overhaul

I decided to go through each function and UI section one by one, improving and overhauling things. Each function and section is going to be fully tested and not rushed out.

This is the best way to catch things, but also include the code base as much as possible.

core/exporters/export_resonite.py

@@ -1,6 +1,6 @@
 import bpy
 from typing import List, Optional
-from ...core.common import get_armature
+from ...core.common import get_active_armature
 from bpy.types import Object, ShapeKey, Mesh, Context, Operator
 from functools import lru_cache
 from ...core.translations import t
@@ -12,10 +12,9 @@ class AvatarToolKit_OT_ExportResonite(Operator):
     bl_options = {'REGISTER', 'UNDO'}
     filepath: bpy.props.StringProperty()
 
-
     @classmethod
     def poll(cls, context: Context):
-        if get_armature(context) is None:
+        if get_active_armature(context) is None:
             return False
         return True