Undo/Redo for Designer

[mgubaidullin]

This might help https://www.npmjs.com/package/zundo after #836

[vidhyasagarj]

@mgubaidullin can we work on this. (@indubabu & @vidhyasagarj)

1. Add Zundo package
2. Add undo & redo action buttons to the integration designer
3. Use zundo to maintain past & future state of integration yaml string
4. Save/Update yaml string based on undo/redo action
5. May have to change the property input save to onBlur instead of onChange to avoid character level undo/redo action.

Challenges

1. Unable undo delete action on array -> raise an issue in zundo (Unable to undo delete operation on array. charkour/zundo#161)
2. When actions may not focus on the area of change in the designer or in the property slide -> any suggestion on how we can address this?

[mgubaidullin]

This one is on hold until we fix performance issues in Designer.

[vidhyasagarj]

Noted @mgubaidullin,

Is there an issue for understanding the performance issue in the designer?
or Can we work on any other item?