[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]

Skipping CI for Draft Pull Request.
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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 77.77778% with 6 lines in your changes missing coverage. Please review.
✅ Project coverage is 62.02%. Comparing base (deff3bf) to head (95e3b3a).
⚠️ Report is 15 commits behind head on main.

Files with missing lines	Patch %	Lines
pkg/builders/buildpacks/builder.go	66.66%	3 Missing and 3 partials ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #3067      +/-   ##
==========================================
- Coverage   63.12%   62.02%   -1.10%     
==========================================
  Files         150      162      +12     
  Lines       13227    16905    +3678     
==========================================
+ Hits         8350    10486    +2136     
- Misses       3916     5218    +1302     
- Partials      961     1201     +240     

Flag	Coverage Δ
e2e-tests	44.72% <77.77%> (+3.30%)	⬆️
integration-tests	56.77% <44.44%> (+0.14%)	⬆️
unit-tests	45.47% <33.33%> (-4.74%)	⬇️

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[gauron99]

/retest