cve_lookup: added support for CVSS metrics v4.0+

[jstucke]

• fixed a KeyError in the CVE data parsing
• added generic support for more versions of CVSS metrics than v2, v3.0 and v3.1 (as long as the general structure of the data does not change)
  • changed the schema of the internal DB so that all scores are stored as JSON instead of storing v2 and v3.x separately
    • these changes require rebuilding the database by rerunning the installation for existing FACT installations!
  • adjusted jinja filters and the template

[codecov-commenter]

Codecov Report

Attention: Patch coverage is 83.33333% with 6 lines in your changes missing coverage. Please review.

Project coverage is 91.84%. Comparing base (42f7320) to head (041ecc7).
Report is 6 commits behind head on master.

Files with missing lines	Patch %	Lines
...lysis/cve_lookup/internal/database/db_interface.py	50.00%	4 Missing ⚠️
...ugins/analysis/cve_lookup/internal/data_parsing.py	92.85%	1 Missing ⚠️
src/web_interface/filter.py	83.33%	1 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #1233      +/-   ##
==========================================
- Coverage   91.96%   91.84%   -0.12%     
==========================================
  Files         377      376       -1     
  Lines       22360    20964    -1396     
==========================================
- Hits        20564    19255    -1309     
+ Misses       1796     1709      -87     

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