feat(checker): add pixman checker

[ffontaine]

No description provided.

[codecov-commenter]

Codecov Report

Merging #3010 (7619cd1) into main (6e807b1) will decrease coverage by 0.35%.
The diff coverage is 100.00%.

@@            Coverage Diff             @@
##             main    #3010      +/-   ##
==========================================
- Coverage   82.92%   82.57%   -0.35%     
==========================================
  Files         674      678       +4     
  Lines       10650    10670      +20     
  Branches     1429     1429              
==========================================
- Hits         8831     8811      -20     
- Misses       1457     1485      +28     
- Partials      362      374      +12     

Flag	Coverage Δ
longtests	82.10% <100.00%> (-0.35%)	⬇️
win-longtests	80.11% <100.00%> (-0.35%)	⬇️

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

Impacted Files	Coverage Δ
cve_bin_tool/checkers/__init__.py	91.48% <ø> (ø)
cve_bin_tool/checkers/pixman.py	100.00% <100.00%> (ø)
test/test_data/pixman.py	100.00% <100.00%> (ø)

... and 10 files with indirect coverage changes

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[terriko]

Looks good, thanks!