[FR] Duplicate task on Kanban should duplicate the document as well

[khorshuheng]

Description

Currently, if a task is duplicated, only the property of the card is duplicated, but not the collab document associated with the task, which can be counter intuitive.

This is typically useful for users who wants to setup a template task that they can duplicate subsequently. So if we don't want to change the current behavior, the other alternative could be providing the ability to quickly create a task on Kanban that has a predefined text/markdown template for the document.

Impact

Users who wants to setup a template task that they can duplicate subsequently.

Additional Context

No response