feat: warn if cmake/ninja in build system requirements

[henryiii]

Fix #780.

[codecov]

Codecov Report

Attention: Patch coverage is 71.42857% with 2 lines in your changes missing coverage. Please review.

Project coverage is 82.90%. Comparing base (0e67e57) to head (fc305fc).
Report is 79 commits behind head on main.

Files with missing lines	Patch %	Lines
src/scikit_build_core/build/wheel.py	71.42%	2 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #803      +/-   ##
==========================================
- Coverage   82.92%   82.90%   -0.03%     
==========================================
  Files          69       69              
  Lines        3919     3926       +7     
==========================================
+ Hits         3250     3255       +5     
- Misses        669      671       +2     

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