Add ability to move cells in drag and drop notebook

[tlokeshrao]

Description

Currently users can not move a cell up or down in the drag and drop notebook. The method to move code around is to insert a new box, copy the code, and delete the old one

Existing

Is there any relevant code or ui feature that the developer should know about when resolving this issue.

Requirements

What are more specific requirements that needs to take to consider this issue resolved.

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