[WIP]feat: use upstream scaffolding for go

[gauron99]

Changes

• 🧹 Remove the use of old go scaffolding with pack builder

/kind cleanup
Fixes #3005

[knative-prow]

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[knative-prow]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: gauron99

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[codecov]

Codecov Report

❌ Patch coverage is 59.32203% with 24 lines in your changes missing coverage. Please review.
✅ Project coverage is 51.83%. Comparing base (a23f6d8) to head (11093ef).
⚠️ Report is 42 commits behind head on main.

Files with missing lines	Patch %	Lines
pkg/builders/buildpacks/builder.go	35.29%	20 Missing and 2 partials ⚠️
pkg/k8s/dialer.go	50.00%	1 Missing ⚠️
pkg/pipelines/tekton/tasks.go	91.66%	1 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #3067      +/-   ##
==========================================
+ Coverage   51.82%   51.83%   +0.01%     
==========================================
  Files         162      162              
  Lines       19131    19188      +57     
==========================================
+ Hits         9914     9947      +33     
- Misses       8240     8262      +22     
- Partials      977      979       +2     

Flag	Coverage Δ
integration	17.96% <41.02%> (+0.05%)	⬆️
unit macos-14	44.36% <41.02%> (-0.01%)	⬇️
unit macos-latest	44.36% <41.02%> (-0.01%)	⬇️
unit ubuntu-24.04-arm	44.56% <45.76%> (+0.01%)	⬆️
unit ubuntu-latest	45.30% <41.02%> (-0.02%)	⬇️
unit windows-latest	44.39% <41.02%> (-0.01%)	⬇️

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[gauron99]

/retest

[gauron99]

/retest

[gauron99]

/test all

[knative-prow-robot]

PR needs rebase.

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