feat: added libseccomp checker

[yashugarg]

fixes #1493
The signatures are not ideal but I tried to test the used pattern for several packages (.apk, .deb, .rpm) and it seems to work fine.

[codecov-commenter]

Codecov Report

Merging #1556 (c100651) into main (d6ade7c) will increase coverage by 2.14%.
The diff coverage is 100.00%.

@@            Coverage Diff             @@
##             main    #1556      +/-   ##
==========================================
+ Coverage   80.25%   82.39%   +2.14%     
==========================================
  Files         281      283       +2     
  Lines        5581     5590       +9     
  Branches      911      912       +1     
==========================================
+ Hits         4479     4606     +127     
+ Misses        904      791     -113     
+ Partials      198      193       -5     

Flag	Coverage Δ
longtests	82.39% <100.00%> (+2.14%)	⬆️

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	95.45% <ø> (ø)
cve_bin_tool/checkers/libseccomp.py	100.00% <100.00%> (ø)
test/test_data/libseccomp.py	100.00% <100.00%> (ø)
cve_bin_tool/version_scanner.py	57.42% <0.00%> (+0.99%)	⬆️
cve_bin_tool/extractor.py	65.21% <0.00%> (+1.24%)	⬆️
cve_bin_tool/cli.py	73.66% <0.00%> (+2.23%)	⬆️
cve_bin_tool/checkers/glibc.py	100.00% <0.00%> (+4.16%)	⬆️
test/test_cli.py	93.60% <0.00%> (+10.95%)	⬆️
test/test_scanner.py	74.61% <0.00%> (+12.30%)	⬆️
cve_bin_tool/cvedb.py	85.83% <0.00%> (+13.88%)	⬆️
... and 2 more

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[yashugarg]

@BreadGenie please review the PR

[BreadGenie]

The code looks good to me!
We follow conventional commits so you need to change the PR title and in the future commit messages also to follow conventional commits

[yashugarg]

I've fixed the commit message and the PR title.

[terriko]

Thank you!