feat: Autocomplete fields for grouper selection and option for less verbose UI

[fsbraun]

Description

1. This PR adds autocomplete fields and some minimal styling to the grouper form when accessing the version change list:
   
   Before this was a classical select drop-down which quickly gets difficult to handle with a growing number of pages or other grouper objects.

2. Option for less verbose UI: Setting DJANGOCMS_VERSIONING_VERBOSE_UI ? False will remove the version change lists from the admin index view (to not clutter it). Version management is still accessible through the versioned models' admins. Also, it will make the version change list less wide by removing the created by date for easier access to the action buttons:
   

Related resources

• fix: Grouper admin raised AttributeError when used outside the admin views django-cms#8067 required for this PR to work
• #...

Checklist

• I have opened this pull request against master
• I have added or modified the tests when changing logic
• I have followed the conventional commits guidelines to add meaningful information into the changelog
• I have read the contribution guidelines and I have joined #workgroup-pr-review on
  Slack to find a “pr review buddy” who is going to review my pull request.

[codecov]

Codecov Report

Attention: Patch coverage is 84.21053% with 3 lines in your changes missing coverage. Please review.

Project coverage is 91.09%. Comparing base (3b3fa2f) to head (705dc71).
Report is 1 commits behind head on master.

Files with missing lines	Patch %	Lines
djangocms_versioning/forms.py	80.00%	3 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##           master     #433      +/-   ##
==========================================
- Coverage   91.16%   91.09%   -0.07%     
==========================================
  Files          72       72              
  Lines        2670     2685      +15     
  Branches      308      310       +2     
==========================================
+ Hits         2434     2446      +12     
- Misses        164      167       +3     
  Partials       72       72              

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[vinitkumar]

Looks good to me. Let's get this merged and released 🚢 🚀