fix: LEAP-1352: API for Bulk Annotation Configuration Validation

[triklozoid]

• add a new property config_suitable_for_bulk_annotation into /api/projects/ID API. it validates that label config supports bulk annotation and return the result

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[codecov]

Codecov Report

Attention: Patch coverage is 91.30435% with 2 lines in your changes missing coverage. Please review.

Project coverage is 76.72%. Comparing base (05eaf86) to head (1598383).
Report is 2 commits behind head on develop.

Files with missing lines	Patch %	Lines
label_studio/projects/serializers.py	91.30%	2 Missing ⚠️

Additional details and impacted files

@@             Coverage Diff             @@
##           develop    #6757      +/-   ##
===========================================
+ Coverage    76.70%   76.72%   +0.01%     
===========================================
  Files          170      170              
  Lines        13919    13942      +23     
===========================================
+ Hits         10677    10697      +20     
- Misses        3242     3245       +3     

Flag	Coverage Δ
pytests	76.72% <91.30%> (+0.01%)	⬆️

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