[worker] add new thread pool dedicated to internal queues (#12490)

[JeremyCloarec]

Proposed changes

• add new thread pool dedicated to internal queues

linked to OpenCTI-Platform/client-python#1021

Related issues

• Option to dedicate workers to specific queues #12490

Checklist

• I consider the submitted work as finished
• I tested the code for its functionality
• I wrote test cases for the relevant uses case (coverage and e2e)
• I added/update the relevant documentation (either on github or on notion)
• Where necessary I refactored code to improve the overall quality

Further comments

[codecov]

Codecov Report

❌ Patch coverage is 85.71429% with 2 lines in your changes missing coverage. Please review.
✅ Project coverage is 16.32%. Comparing base (5cf1acc) to head (0dede55).
⚠️ Report is 18 commits behind head on master.

Files with missing lines	Patch %	Lines
...rm/opencti-graphql/src/modules/form/form-domain.ts	33.33%	2 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##           master   #12896      +/-   ##
==========================================
+ Coverage   16.14%   16.32%   +0.17%     
==========================================
  Files        2821     2822       +1     
  Lines      409113   409414     +301     
  Branches    11263    11957     +694     
==========================================
+ Hits        66059    66832     +773     
+ Misses     343054   342582     -472     

Flag	Coverage Δ
opencti	16.32% <85.71%> (+0.17%)	⬆️
opencti-front	3.92% <ø> (+0.03%)	⬆️
opencti-graphql	67.07% <85.71%> (+0.69%)	⬆️

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[xfournet]

i would have say 'Groupe de priorité' ?