Add pre-commit hook

[mtfishman]

Based on the one in JuliaFormatter.jl: https://github.com/domluna/JuliaFormatter.jl/blob/master/.pre-commit-hooks.yaml, https://github.com/domluna/JuliaFormatter.jl/blob/master/.pre-commit-config.yaml, https://domluna.github.io/JuliaFormatter.jl/stable/integrations/#pre-commit.

See also Runic.jl's setup: https://github.com/fredrikekre/Runic.jl?tab=readme-ov-file#git-hooks, https://github.com/fredrikekre/runic-pre-commit.

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 99.30%. Comparing base (89cfeb5) to head (2fb210e).
⚠️ Report is 1 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main       #6   +/-   ##
=======================================
  Coverage   99.30%   99.30%           
=======================================
  Files           1        1           
  Lines         144      144           
=======================================
  Hits          143      143           
  Misses          1        1           

Flag	Coverage Δ
docs	0.00% <ø> (ø)

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