feat(merge): Add filter for intermediate reports

[imsahil007]

I have added a filter for intermediate reports which will filter out reports from the merge output.
Do users want to filter out the reports on the basis of a date range as well? If that is the case, should I add -s --start-date and -e --end-date arguments. Or should I just convert -F --filter to a dictionary type input.?

[terriko]

Sorry, looks like merging #1218 made some minor merge conflicts here.

[terriko]

I'd like to have an entry in the manual explaining why the user would want this. Is the expectation that they'll have all the reports in a directory and merge them all every time, and might just want to exclude one without moving the file(s) with that tag out of the directory? What circumstances would make this useful? Are you thinking "what if you had nightly scans but you only wanted to show the ones per week" or something else?

[codecov-commenter]

Codecov Report

Merging #1262 (8dd7e75) into main (82de345) will decrease coverage by 0.03%.
The diff coverage is 55.55%.

@@            Coverage Diff             @@
##             main    #1262      +/-   ##
==========================================
- Coverage   79.35%   79.31%   -0.04%     
==========================================
  Files         271      271              
  Lines        4902     4908       +6     
  Branches      591      593       +2     
==========================================
+ Hits         3890     3893       +3     
- Misses        865      866       +1     
- Partials      147      149       +2     

Flag	Coverage Δ
longtests	79.31% <55.55%> (-0.04%)	⬇️

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Impacted Files	Coverage Δ
cve_bin_tool/cli.py	74.26% <25.00%> (-0.74%)	⬇️
cve_bin_tool/merge.py	79.50% <80.00%> (-0.33%)	⬇️

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[terriko]

Looks good! I really like the new docs. We might want to consider putting --merge and --filter into their own argument group to make it more clear that they go together, but I'll file a separate issue for that.