small refactor for Ifc.edit and tool.Ifc

1) replaced IfcStore.edited_objs.add with tool.Ifc.edit
2) updated interface in tool.py
3) removed unlink from tool.Ifc - it was declared there twice

src/blenderbim/scripts/geonodes_modifier_prototype.py

@@ -19,7 +19,6 @@
 
 import ifcopenshell
 import blenderbim.tool as tool
-from blenderbim.bim.ifc import IfcStore
 
 import bpy
 import bmesh
@@ -113,7 +112,7 @@ def update_geonodes_modifier():
         bm.to_mesh(obj.data)
         bm.free()
     obj.data.update()
-    IfcStore.edited_objs.add(obj)
+    tool.Ifc.edit(obj)
 
 
 if __name__ == "__main__":