First Working version. I can add table

src/components/addstuff/constants.py

@@ -0,0 +1,9 @@
+ADD_STUFF_INSTANCE_ID = "__AddStuff__"
+ADD_DATABASE_INSTANCE_ID = "__AddDatabase__"
+REPOSITORIES_INSTANCE_ID = "__Repositories__"
+ROUTE_ROOT = "/add"
+
+class Routes:
+  AddRepository = "/add-repository"
+  SelectRepository = "/select-repository"
+  ShowTable = "/show-table"