feat: Add intermediate severity trace table in pdf report

[imsahil007]

BREAKING CHANGE: Added intermediate reports based severity count table

[imsahil007]

https://imsahil007.github.io/severity_output.pdf

[codecov-commenter]

Codecov Report

Merging #1245 (5b6eb32) into main (0a5fdc3) will decrease coverage by 0.18%.
The diff coverage is 14.28%.

@@            Coverage Diff             @@
##             main    #1245      +/-   ##
==========================================
- Coverage   76.62%   76.44%   -0.19%     
==========================================
  Files         223      223              
  Lines        4368     4381      +13     
  Branches      549      552       +3     
==========================================
+ Hits         3347     3349       +2     
- Misses        876      888      +12     
+ Partials      145      144       -1     

Flag	Coverage Δ
longtests	76.44% <14.28%> (-0.19%)	⬇️

Flags with carried forward coverage won't be shown. Click here to find out more.

Impacted Files	Coverage Δ
cve_bin_tool/output_engine/__init__.py	48.36% <7.69%> (-3.41%)	⬇️
cve_bin_tool/output_engine/pdfbuilder.py	31.90% <100.00%> (+0.42%)	⬆️
cve_bin_tool/version.py	70.00% <0.00%> (ø)

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[terriko]

This is going to be incredibly useful to a lot of people, i think!