fix: LEAP-1650: pkg_resources deprecation problems for 3.12,3.13

[jombooth]

pkg_resources was deprecated in python 3.12; replace usages with importlib and address imported packages that use pkg_resources as well. boxing has been replaced with the very similar pyboxen.

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[codecov]

Codecov Report

Attention: Patch coverage is 75.00000% with 2 lines in your changes missing coverage. Please review.

Project coverage is 76.70%. Comparing base (e6e68f0) to head (2d18e3e).
Report is 6 commits behind head on develop.

Files with missing lines	Patch %	Lines
label_studio/core/utils/common.py	66.66%	2 Missing ⚠️

Additional details and impacted files

@@             Coverage Diff             @@
##           develop    #6638      +/-   ##
===========================================
+ Coverage    76.67%   76.70%   +0.03%     
===========================================
  Files          169      169              
  Lines        13844    13846       +2     
===========================================
+ Hits         10615    10621       +6     
+ Misses        3229     3225       -4     

Flag	Coverage Δ
pytests	76.70% <75.00%> (+0.03%)	⬆️

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[farioas]

Best change, been waiting for it for two years
LGTM 🚀🚀🚀🚀🚀🚀🚀🚀🚀🚀🚀🚀🚀🚀