WIP sarif output

[chris48s]

Revisit this if the conversation in #148 ever moves on.
TODO: needs tests if nothing else

[codecov]

Codecov Report

Attention: Patch coverage is 37.70492% with 38 lines in your changes missing coverage. Please review.

Project coverage is 90.71%. Comparing base (63d1cc2) to head (43f29bd).
Report is 311 commits behind head on main.

Files	Patch %	Lines
src/output-formatters.js	29.41%	36 Missing ⚠️
src/cli.js	77.77%	1 Missing and 1 partial ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #217      +/-   ##
==========================================
- Coverage   95.47%   90.71%   -4.77%     
==========================================
  Files          11       11              
  Lines         730      786      +56     
  Branches      161      162       +1     
==========================================
+ Hits          697      713      +16     
- Misses         32       71      +39     
- Partials        1        2       +1     

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