Add Corwin

[cbkerr]

Description

Motivation and Context

I'm a maintainer now!

Checklist:

• I am familiar with the Contributing Guidelines.
• I agree with the terms of the Contributor Agreement.
• My name is on the list of contributors.
• The changes introduced by this pull request are covered by existing or newly introduced tests.
• The package documentation and framework documentation in signac-docs are up to date with these changes.
• I have updated the changelog and added any related issue and pull request numbers for future reference.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Comparison is base (afcc358) 85.65% compared to head (ea3d597) 85.65%.

Additional details and impacted files

@@           Coverage Diff           @@
##             main     #968   +/-   ##
=======================================
  Coverage   85.65%   85.65%           
=======================================
  Files          20       20           
  Lines        3464     3464           
  Branches      759      759           
=======================================
  Hits         2967     2967           
  Misses        338      338           
  Partials      159      159           

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[bdice]

@cbkerr Can you open a similar PR to signac-flow?