Added options for Reporting Plugins to README

[m0g3ns]

Closes #491

I added usage examples for reporting plugins to example configurations and the list of available reporting plugins.
This should simplify the usage of the tool so users do not have to look in the source files of the plugins to understand how they work.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Comparison is base (2522518) 100.00% compared to head (d3490ca) 96.62%.
Report is 1 commits behind head on main.

Additional details and impacted files

@@             Coverage Diff             @@
##              main     #492      +/-   ##
===========================================
- Coverage   100.00%   96.62%   -3.38%     
===========================================
  Files           59       59              
  Lines         3378     3378              
===========================================
- Hits          3378     3264     -114     
- Misses           0      114     +114     

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[xydesa]

@denewiler it seems like the action failures in here might also be occuring in main: https://github.com/sscpac/statick/actions/runs/7732454334/job/21082413604

[denewiler]

The same unit test is failing in main and in this PR branch. Locally I ran statick against this branch (since that step gets skipped in workflows due to the failing unit test) and it passed. I'm good merging this and fixing the unit test separately.

[denewiler]

One addition I would like to see is an updated changelog. I'm fine if we do that ourselves before the next release.

[tdenewiler]

#493 created to fix unit test.