FEM: add modules to migrate old FEM app and gui objects

src/Mod/Fem/Init.py

@@ -40,8 +40,16 @@ __author__ = "Juergen Riegel, Bernd Hahnebach"
 __url__ = "http://www.freecadweb.org"
 
 # imports to get flake8 quired
+import sys
 import FreeCAD
 
+# needed imports
+from femtools.migrate_app import FemMigrateApp
+
+
+# migrate old FEM App objects
+sys.meta_path.append(FemMigrateApp())
+
 
 # add FEM unit tests
 FreeCAD.__unit_test__ += ["TestFem"]