✨Able save points on link and add listener when moving node

[AdrySky]

Description

This will enable to save points created on any link with a listener to detect its changes. The listener also included when moving node.

Pull Request Type

• Xircuits Core (Jupyterlab Related changes)
• Xircuits Canvas (Custom RD Related changes)
• Xircuits Component Library
• Testing Automation
• Documentation
• Others (Please Specify)

Type of Change

• New feature (non-breaking change which adds functionality)
• Bug fix (non-breaking change which fixes an issue)
• Breaking change (fix or feature that would cause existing functionality to not work as expected)
• This change requires a documentation update

Tests

1. Points created still exist when reopen xircuits
   1. Open any example
   2. Try add points on any link
   3. Save
   4. Close and reopen xircuits
   5. Points created still exist
2. Listener when moving node
   1. Make sure xircuits not in 'dirty' state
   2. Try moving node and release mouse button
   3. You will see xircuits is in 'dirty' state
3. Listener when creating point
   1. Make sure xircuits not in 'dirty' state
   2. Try adding point on any link created and release mouse button
   3. You will see xircuits is in 'dirty' state

Tested on?

• Windows
• Linux Ubuntu
• Centos
• Mac
• Others (State here -> xxx )

[MFA-X-AI]

Tested on Windows, all 3 features

1. Points created still exist when reopen xircuits
2. Listener when moving node
3. Listener when creating point

work flawlessly. Wasn't expecting (2) when first testing it out, was pleasantly surprised it worked how it is now. Bery much appreciated for those with large complicated Xircuits workflows. Great work!