chore: re-scaffold project

[arturshadnik]

Issue

#536

Description

This PR re-scaffolds the project using kubebuilder alpha generate. The 2 major changes are:

• Remove all usage of kube-rbac-proxy and replace with WithAuthenticationAndAuthorization due to kube-rbac-proxy being deprecated
• Initialize e2e tests. For now, we are only testing basic functionality. The tests should be expanded to cover validator-specific use-cases.

[codecov]

Codecov Report

Attention: Patch coverage is 0% with 218 lines in your changes missing coverage. Please review.

Files with missing lines	Patch %	Lines
tests/utils/utils.go	0.00%	159 Missing ⚠️
cmd/main.go	0.00%	59 Missing ⚠️

@@             Coverage Diff             @@
##             main     #539       +/-   ##
===========================================
- Coverage   67.29%   57.21%   -10.08%     
===========================================
  Files          11       12        +1     
  Lines        1226     1442      +216     
===========================================
  Hits          825      825               
- Misses        343      559      +216     
  Partials       58       58               

Files with missing lines	Coverage Δ
api/v1alpha1/awsvalidator_types.go	88.00% <ø> (ø)
internal/controller/awsvalidator_controller.go	74.07% <ø> (ø)
pkg/validators/iam/iam_validator.go	79.95% <ø> (ø)
cmd/main.go	0.00% <0.00%> (ø)
tests/utils/utils.go	0.00% <0.00%> (ø)

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