docs: adding epss

[Rexbeast2]

I have created a metric section, and we could add about cvss here.
fixes #3232

[terriko]

I have to wait for the tests to finish before I can merge this, but it looks really good, thank you!

[Rexbeast2]

@terriko I created a section of metrics. So the issue we were talking of having information about cvss would be added in this section.

[codecov-commenter]

Codecov Report

Merging #3233 (6d6b0cb) into main (338e0cf) will decrease coverage by 0.01%.
Report is 8 commits behind head on main.
The diff coverage is n/a.

@@            Coverage Diff             @@
##             main    #3233      +/-   ##
==========================================
- Coverage   80.82%   80.82%   -0.01%     
==========================================
  Files         716      718       +2     
  Lines       11163    11189      +26     
  Branches     1497     1502       +5     
==========================================
+ Hits         9022     9043      +21     
  Misses       1738     1738              
- Partials      403      408       +5     

Flag	Coverage Δ
longtests	75.55% <ø> (+0.06%)	⬆️
win-longtests	78.74% <ø> (+<0.01%)	⬆️

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[terriko]

Tests are happy, time to merge. Thank you again!