Script to regenerate test fixtures, upgrade to Pyre 0.9.10

[amyreese]

Summary

Upgrading Pyre requires updating test fixtures with any upstream changes
to Pyre's query results for the simple_class.py fixture.

This adds a new scripts/ directory to the repo, with a script to
regenerate test fixtures. The script regenerates the cache data fixture,
and updates the TypeInferenceProvider tests to use assertDictEqual
and helpful error messages for better behavior in future mismatches.

This also includes a slight bump to Pyre 0.9.10 to fix install issues on
Apple Silicon M1 Macs, and regenerated fixtures using the script above.

Test Plan

python -m unittest -vk test_type_inference_provider

[codecov-commenter]

Codecov Report

Base: 94.79% // Head: 94.79% // Increases project coverage by +0.00% 🎉

Coverage data is based on head (ce80f78) compared to base (8aebbb6).
Patch coverage: 100.00% of modified lines in pull request are covered.

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Additional details and impacted files

@@           Coverage Diff           @@
##             main     #872   +/-   ##
=======================================
  Coverage   94.79%   94.79%           
=======================================
  Files         249      249           
  Lines       25831    25832    +1     
=======================================
+ Hits        24487    24488    +1     
  Misses       1344     1344           

Impacted Files	Coverage Δ
libcst/matchers/_visitors.py	95.81% <ø> (ø)
...cst/metadata/tests/test_type_inference_provider.py	93.22% <100.00%> (+0.11%)	⬆️

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[amyreese]

Sigh, apparently this functionality already exists in the undocumented libcst/tests/test_pyre_integration.py file, not exactly the place I would expect to find a script that updates fixtures...

[amyreese]

Removed old script from test stub, updated CI config, and cleaned up lint.

[zsol]

Thanks for cleaning up the old script