feat: drag-drop documents into folder

[mfts]

• multi-select documents
• drag and drop to move document to folder

[vercel]

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Name	Status	Preview	Comments	Updated (UTC)
papermark	✅ Ready (Inspect)	Visit Preview	💬 Add feedback	Aug 13, 2024 2:29pm

[what-the-diff]

PR Summary

• Addition of Checkbox Component
  The functionality of Checkbox has been extended to the Document card.

• DraggableItem Component Inserted
  A component named DraggableItem has been included in the Drag-and-Drop feature, enhancing its functionality.

• DroppableFolder Component Added
  A new feature called DroppableFolder has been added to the Drag-and-Drop system to make folders able to receive draggable elements.

• Modification of Folder Card
  The Folder Card has been upgraded with click handling for the card, introducing drag and drop functionality, and a new overlay added when dragging over a folder.

• Portal Component Introduced
  A new component, the Portal, has been created, contributing to the overall system complexity and feature set.

• Update of System Packages
  The system's package files have been updated with a new package named "@radix-ui/react-portal" to enhance the system features.

• API Route Addition
  A new API route named "move" has been added to allow the movement of documents within a team, improving overall team collaboration.

• Enhancements to Index File
  Improvements in the Index file include the addition of sticky header styles, a count of folders and documents, and relocation of counts into a separate section.

• Tree File Modifications
  Adjustments to the Tree file provide a count of folders and documents and shift these counts into a separate, more organized section.