Added user input tracking + Started error management for in the Designer

src/components/workflows/Readme.md

@@ -4,9 +4,10 @@
 
 using `_id={WORKFLOW_DESIGNER_INSTANCE_ID}{session['user_id']}{get_unique_id()}`
 
-| Name       | value          |
-|------------|----------------|
-| Canvas     | `c_{self._id}` |
-| Designer   | `d_{self._id}` |
-| Properties | `p_{self._id}` |
-| Spliter    | `s_{self._id}` |
+| Name          | value            |
+|---------------|------------------|
+| Canvas        | `c_{self._id}`   |
+| Designer      | `d_{self._id}`   |
+| Error Message | `err_{self._id}` |
+| Properties    | `p_{self._id}`   |
+| Spliter       | `s_{self._id}`   |