chore(cli): simplify config with helper functions

[mrgrain]

Reason for this change

Simplify the codegen for CLI config. Previously the generated function expected a number of arguments at call time.
Instead we now require a single helpers object at build time. This holds typewriter references to any function called during config parsing.

Additionally, some the helper functions for init and migrate are now just called at build time. This is fine because these values don't change dynamically unless a code change is made to the CLI.

Description of changes

• Moved all helper functions into a single file
• Created a typewriter proxy class for that file
• Use the module proxy instead passing arguments at runtime
• This allows us to get rid of the DynamicValue stuff all-together and instead we can just check if a value is a typewriter expression.

Description of how you validated changes

Existing tests cover this. Run additional manual verification as well.

Checklist

• My code adheres to the CONTRIBUTING GUIDE and DESIGN GUIDELINES

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By submitting this pull request, I confirm that my contribution is made under the terms of the Apache-2.0 license

[aws-cdk-automation]

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[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 78.85%. Comparing base (38116b0) to head (e58572e).

Additional details and impacted files

@@            Coverage Diff             @@
##             main   #32547      +/-   ##
==========================================
+ Coverage   78.80%   78.85%   +0.04%     
==========================================
  Files         108      108              
  Lines        7159     7165       +6     
  Branches     1319     1319              
==========================================
+ Hits         5642     5650       +8     
+ Misses       1332     1330       -2     
  Partials      185      185              

Flag	Coverage Δ
suite.unit	78.85% <100.00%> (+0.04%)	⬆️

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Components	Coverage Δ
packages/aws-cdk	78.85% <100.00%> (+0.04%)	⬆️

[aws-cdk-automation]

➡️ PR build request submitted to test-main-pipeline ⬅️

A maintainer must now check the pipeline and add the pr-linter/cli-integ-tested label once the pipeline succeeds.

[aws-cdk-automation]

AWS CodeBuild CI Report

• CodeBuild project: AutoBuildv2Project1C6BFA3F-wQm2hXv2jqQv
• Commit ID: e58572e
• Result: SUCCEEDED
• Build Logs (available for 30 days)

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✅ Updated pull request passes all PRLinter validations. Dismissing previous PRLinter review.

[mergify]

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