Feat: show unused reason

[yonahd]

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What this PR does / why we need it

PR Checklist

• This PR adds K8s exceptions (false positives)
• This PR adds new code
• This PR includes test for any new code

Github Issue

[#167 ]

[yonahd]

Example output

[codecov-commenter]

Codecov Report

Attention: Patch coverage is 47.01835% with 231 lines in your changes missing coverage. Please review.

Project coverage is 41.21%. Comparing base (ea85ff7) to head (04aa206).
Report is 2 commits behind head on main.

Files	Patch %	Lines
pkg/kor/formatter.go	9.27%	134 Missing and 3 partials ⚠️
pkg/kor/delete.go	15.09%	45 Missing ⚠️
pkg/kor/crds.go	0.00%	6 Missing ⚠️
pkg/kor/multi.go	0.00%	5 Missing ⚠️
pkg/kor/pdbs.go	61.53%	5 Missing ⚠️
pkg/kor/all.go	0.00%	4 Missing ⚠️
pkg/kor/finalizers.go	70.00%	3 Missing ⚠️
pkg/kor/services.go	80.00%	3 Missing ⚠️
pkg/kor/statefulsets.go	78.57%	3 Missing ⚠️
pkg/kor/hpas.go	75.00%	2 Missing ⚠️
... and 16 more

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Additional details and impacted files

@@            Coverage Diff             @@
##             main     #278      +/-   ##
==========================================
+ Coverage   40.87%   41.21%   +0.34%     
==========================================
  Files          58       59       +1     
  Lines        2953     3113     +160     
==========================================
+ Hits         1207     1283      +76     
- Misses       1545     1627      +82     
- Partials      201      203       +2     

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[yonahd]

@luisdavim @doronkg
If you can take a look that would be great

[doronkg]

LGTM
Small fixes in reason descriptions.