Feature/action builder dnd implementation

[mprasanjith]

Description

This PR implements the drag and drop functionality for the action builder.

Closes #736.

Type of change

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

How Has This Been Tested?

Please describe the tests that you ran to verify your changes. Provide instructions so we can reproduce.

Checklist:

• My code follows the existing style of this project
• I have performed a self-review of my own code
• I have commented my code, particularly in hard-to-understand areas
• I have made corresponding changes to the documentation
• I have added tests that prove my fix is effective or that my feature works
• New and existing unit tests pass locally with my changes
• Any UI changes have been tested and made responsive for mobile views

[github-actions]

✔️ Preview deployment is ready!

🔨 Explore the source changes: cd6f545

😎 Browse the preview: https://bafybeic4h747rix6u4iw2vb4zw4uvj4ktubyyx5col6sccdn4yxuhquhme.ipfs.dweb.link

[github-actions]

✔️ Preview deployment is ready!

🔨 Explore the source changes: 876b571

😎 Browse the preview: https://bafybeic4h747rix6u4iw2vb4zw4uvj4ktubyyx5col6sccdn4yxuhquhme.ipfs.dweb.link

[rossneilson]

Absolutely amazing stuff, very well implemented!