fix(webhook): generate token for status update on failed compile

[ecrupper]

This line of code causes panics due to the fact that p is nil whenever there is an error from CompileAndPublish.

For app installs, we should generate an install token with default access, and for non-app installs, we should use the owner token.

I also updated GetNetrcPassword to accept repos and perms rather than a yaml object. Felt more appropriate.

[codecov]

Codecov Report

❌ Patch coverage is 26.66667% with 11 lines in your changes missing coverage. Please review.
✅ Project coverage is 58.23%. Comparing base (22950e6) to head (19fc584).

Files with missing lines	Patch %	Lines
api/webhook/post.go	0.00%	9 Missing ⚠️
api/build/cancel.go	0.00%	1 Missing ⚠️
compiler/native/compile.go	0.00%	1 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #1412      +/-   ##
==========================================
- Coverage   58.25%   58.23%   -0.03%     
==========================================
  Files         660      660              
  Lines       25285    25292       +7     
==========================================
- Hits        14730    14729       -1     
- Misses       9871     9879       +8     
  Partials      684      684              

Files with missing lines	Coverage Δ
scm/github/repo.go	76.17% <100.00%> (-0.07%)	⬇️
api/build/cancel.go	0.00% <0.00%> (ø)
compiler/native/compile.go	74.25% <0.00%> (ø)
api/webhook/post.go	0.00% <0.00%> (ø)

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