feat: LEAP-1199: Add drag and drop functionality on DM tabs

[juliosgarbi]

PR fulfills these requirements

• Commit message(s) and PR title follows the format [fix|feat|ci|chore|doc]: TICKET-ID: Short description of change made ex. fix: DEV-XXXX: Removed inconsistent code usage causing intermittent errors
• Tests for the changes have been added/updated (for bug fixes/features)
• Docs have been added/updated (for bug fixes/features)
• Best efforts were made to ensure docs/code are concise and coherent (checked for spelling/grammatical errors, commented out code, debug logs etc.)
• Self-reviewed and ran all changes on a local instance (for bug fixes/features)

Change has impacts in these area(s)

(check all that apply)

• Product design
• Backend (Database)
• Backend (API)
• Frontend

Describe the reason for change

Currently, users cannot move tabs around, which is inconvenient. They must delete ("Close") tabs and recreate them in the desired order. This update allows users to reorder tabs by dragging and dropping them.

Key features:

• Drag and drop functionality for tabs.
• Visual indicator to show the drop location.
• Dragging not confined to vertical tab limits.
• Tabs can be reordered regardless of visibility.
• Order of tabs is consistent across the organization after a hard refresh.
• No disruption for concurrent users.
• ESC key cancels the drag action, returning the tab to its original position.

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[triklozoid]

/git merge develop

Workflow run
Successfully merged: rename web/dist/apps/labelstudio/{book.d787a03585e3dfbb093186a4f7e882d3.svg => book.23db5e3751679a820c6e975e99f29323.svg} (70%)

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 76.76%. Comparing base (1a69603) to head (fc91b05).
Report is 4 commits behind head on develop.

Additional details and impacted files

@@             Coverage Diff             @@
##           develop    #6079      +/-   ##
===========================================
+ Coverage    76.73%   76.76%   +0.03%     
===========================================
  Files          168      168              
  Lines        13628    13650      +22     
===========================================
+ Hits         10458    10479      +21     
- Misses        3170     3171       +1     

Flag	Coverage Δ
pytests	76.76% <100.00%> (+0.03%)	⬆️

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[juliosgarbi]

/git merge develop

Workflow run
Successfully merged: Already up to date.

[jombooth]

We need to rework the migration that's included in this PR to make the new field nullable; code depending on the new field should handle nulls.

[juliosgarbi]

/git merge develop

Workflow run
Successfully merged: 29 files changed, 302 insertions(+), 96 deletions(-)

[RiccardoMaistri]

Good morning!
Does the drag and drop funcitonality has to be enabled or enteprse version is required? I am running Label studio v 1.13.1 deployed using helm chart. I am using Version 130.0.6723.91 (Official Build) (64-bit)