✨ Implement Boxcutter

[thetechnick]

Description

Reviewer Checklist

• API Go Documentation
• Tests: Unit Tests (and E2E Tests, if appropriate)
• Comprehensive Commit Messages
• Links to related GitHub Issue(s)

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[joelanford]

Is this an OLM-ism or a boxcutter-ism? I wonder if json.NewEncoder(hasher).Encode(objectToWrite) would be better?

[thetechnick]

This is a kubernetes apimachinery thing:
https://github.com/kubernetes/kubernetes/blob/627ce4946ccd6b67bc18f5a4dda92cf6c583e9b7/pkg/util/hash/hash.go#L26-L32
https://github.com/kubernetes/apimachinery/blob/master/pkg/util/dump/dump.go

I'll import from apimachinery next.

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[codecov]

Codecov Report

Attention: Patch coverage is 43.83954% with 392 lines in your changes missing coverage. Please review.

Project coverage is 70.99%. Comparing base (5786e67) to head (4f39c38).
Report is 3 commits behind head on main.

Files with missing lines	Patch %	Lines
...controllers/clusterextensionrevision_controller.go	57.71%	113 Missing and 13 partials ⚠️
api/v1/zz_generated.deepcopy.go	0.00%	114 Missing ⚠️
cmd/operator-controller/main.go	24.44%	63 Missing and 5 partials ⚠️
...perator-controller/rukpak/util/testing/bundlefs.go	0.00%	42 Missing ⚠️
internal/operator-controller/applier/boxcutter.go	75.35%	23 Missing and 12 partials ⚠️
...troller/controllers/clusterextension_controller.go	30.00%	6 Missing and 1 partial ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #1946      +/-   ##
==========================================
- Coverage   73.60%   70.99%   -2.62%     
==========================================
  Files          78       82       +4     
  Lines        7260     7934     +674     
==========================================
+ Hits         5344     5633     +289     
- Misses       1566     1923     +357     
- Partials      350      378      +28     

Flag	Coverage Δ
e2e	39.79% <3.81%> (-3.93%)	⬇️
experimental-e2e	51.33% <3.96%> (-5.06%)	⬇️
unit	57.44% <40.25%> (-1.44%)	⬇️

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