feat: Improves the compute routes for code analysis

[frgfm]

This PR introduces the following modifications:

• updates routes access for compute router
• adds a route for analysis using a single guideline
• adds an option to run multi-thread analysis

[codecov]

Codecov Report

Attention: 24 lines in your changes are missing coverage. Please review.

Comparison is base (2dc830e) 74.09% compared to head (694b6f8) 72.99%.

❗ Current head 694b6f8 differs from pull request most recent head cbfec5f. Consider uploading reports for the commit cbfec5f to get more accurate results

Additional details and impacted files

@@            Coverage Diff             @@
##             main      #23      +/-   ##
==========================================
- Coverage   74.09%   72.99%   -1.10%     
==========================================
  Files          26       26              
  Lines         660      685      +25     
==========================================
+ Hits          489      500      +11     
- Misses        171      185      +14     

Flag	Coverage Δ
unittests	72.99% <45.45%> (-1.10%)	⬇️

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Files	Coverage Δ
src/app/db.py	58.33% <100.00%> (ø)
src/app/schemas/compute.py	100.00% <ø> (ø)
src/app/api/api_v1/endpoints/compute.py	65.00% <46.15%> (-8.34%)	⬇️
src/app/services/openai.py	61.40% <43.33%> (-8.05%)	⬇️

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