Add pre-commit hooks adapted from astropy

[lpsinger]

No description provided.

[codecov]

Codecov Report

❌ Patch coverage is 95.45455% with 5 lines in your changes missing coverage. Please review.
✅ Project coverage is 96.23%. Comparing base (1e55a9f) to head (b7af16c).
⚠️ Report is 12 commits behind head on main.

Files with missing lines	Patch %	Lines
astropy_healpix/__init__.py	0.00%	1 Missing ⚠️
astropy_healpix/bench.py	96.77%	1 Missing ⚠️
astropy_healpix/core.py	97.77%	1 Missing ⚠️
astropy_healpix/high_level.py	93.33%	1 Missing ⚠️
astropy_healpix/utils.py	85.71%	1 Missing ⚠️

Additional details and impacted files

@@           Coverage Diff           @@
##             main     #245   +/-   ##
=======================================
  Coverage   96.23%   96.23%           
=======================================
  Files           6        6           
  Lines         505      505           
=======================================
  Hits          486      486           
  Misses         19       19           

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[astrofrog]

@lpsinger - I think it'd be good to get this in, would you have time to rebase? I think the easiest would be to remove the second commit and re-generate it after resolving the conflicts for the first commit.

[astrofrog]

Looks good, thank you!