Deprecate policysets CRD

[Samra10]

Closes #209

What changed?

• Remove policysets CR

Why was this change made?

• to introduce a new way to define whether a policy is enforced via the admission controller or just audited for a violation.

How was this change implemented?

• Remove Policysets CRD
• Remove Policysets from docs
• Remove Policysets from code

How did you validate the change?

• Manual testing

Release notes

Documentation Changes

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Comparison is base (a2a59c0) 78.34% compared to head (a05c1aa) 78.48%.

Additional details and impacted files

@@            Coverage Diff             @@
##              dev     #213      +/-   ##
==========================================
+ Coverage   78.34%   78.48%   +0.14%     
==========================================
  Files          22       22              
  Lines        1390     1390              
==========================================
+ Hits         1089     1091       +2     
+ Misses        229      226       -3     
- Partials       72       73       +1     

Flag	Coverage Δ
unit	78.48% <ø> (+0.14%)	⬆️

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[waleedhammam]

closing in favor of #214