new failures report and main category

[toddocon]

- create new main category Failures
- create new report for failed authentication attempts
- move failed webhooks report to this new category

[larsxschneider]

Happy new year @toddocon and thanks for the PR. I'll review it asap and get back to you 👍 😊

[toddocon]

Hi @larsxschneider Is anything required of me on this PR? Thanks,

[codecov-io]

Codecov Report

Merging #224 (ae83f92) into master (d39dd97) will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##           master     #224   +/-   ##
=======================================
  Coverage   28.37%   28.37%           
=======================================
  Files           1        1           
  Lines         652      652           
=======================================
  Hits          185      185           
  Misses        467      467           

Flag	Coverage Δ
docs	28.37% <ø> (ø)

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