feat: add noarch python migrator

[beckermr]

Description:

This PR adds a noarch: python migrator per CFEP-25.

Checklist:

• Pydantic model updated or no update needed

Cross-refs, links to issues, etc:

[codecov]

Codecov Report

Attention: Patch coverage is 87.21805% with 34 lines in your changes missing coverage. Please review.

Project coverage is 77.74%. Comparing base (a9bd044) to head (fe2258c).

Files with missing lines	Patch %	Lines
conda_forge_tick/migrators/noarch_python_min.py	85.04%	32 Missing ⚠️
conda_forge_tick/make_migrators.py	0.00%	2 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #3093      +/-   ##
==========================================
+ Coverage   77.56%   77.74%   +0.17%     
==========================================
  Files         124      126       +2     
  Lines       13374    13640     +266     
==========================================
+ Hits        10374    10604     +230     
- Misses       3000     3036      +36     

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[isuruf]

I don't understand this one.

[beckermr]

What precisely do you not understand?