feat: add functionality to merge file upload and folder upload

[olayinkaadelakun]

Description
This change is meant to improve the the Read File component. We had different tables for file upload and Folder upload. We were looking to consolidated the implementation. I branched of #10208 To make changes off that implementation.

Changes made

1. Added Hierarchy for when i uploaded a flow.
2. Extended the file upload functionality. So that if a user uploads the same file, we just add a new indicator.
3. We also add the feature of frag and dropping folders.
4. Multi Folder selection
5. Multi files delete

Testcases

1. Upload a folder, you should see all the files in that folder represented
2. Select the radio button beside a folder and it select the items within the folder
3. Batch delete selected items
4. Drag a folder into the upload section

Screenshots

Summary by CodeRabbit

• New Features

  • Added folder selection support for file uploads with automatic hidden file filtering and recursive file processing.
  • Implemented automatic unique filename generation when uploading files with duplicate names.
  • Enhanced file management UI with hierarchical tree view, bulk delete capability, and improved file organization.

• Improvements

  • Added drag-and-drop support for folders with better directory detection.
  • Implemented relative path tracking for improved folder structure preservation.