✨ Add support for installing bundles with webhooks

[perdasilva]

Description

Depends on #1893

Adds webhook support to bundle renderer with certificate management. Based on Joe's PoC #1506

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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[codecov]

Codecov Report

Attention: Patch coverage is 91.44812% with 75 lines in your changes missing coverage. Please review.

Project coverage is 71.47%. Comparing base (ed205c5) to head (94e5940).

Files with missing lines	Patch %	Lines
...-controller/rukpak/render/generators/generators.go	89.56%	23 Missing and 13 partials ⚠️
...operator-controller/rukpak/util/testing/testing.go	0.00%	14 Missing ⚠️
internal/operator-controller/rukpak/util/util.go	27.77%	13 Missing ⚠️
...troller/rukpak/render/certproviders/certmanager.go	88.60%	4 Missing and 5 partials ⚠️
...ternal/operator-controller/rukpak/render/render.go	93.75%	2 Missing and 1 partial ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #1914      +/-   ##
==========================================
+ Coverage   69.51%   71.47%   +1.96%     
==========================================
  Files          68       74       +6     
  Lines        5357     5971     +614     
==========================================
+ Hits         3724     4268     +544     
- Misses       1401     1454      +53     
- Partials      232      249      +17     

Flag	Coverage Δ
e2e	46.98% <36.50%> (-3.72%)	⬇️
unit	60.47% <89.85%> (+3.01%)	⬆️

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