Lees-Edwards boundary conditions for shear flow

[wkdarko]

Description

This PR implements the Lees-Edwards boundary conditions for performing shear flow simulations.

Motivation and context

The implementation will allow users to simulate bulk rheology under full periodic boundary conditions.

How has this been tested?

Unit tests on box deformation methods were added.

Checklist:

• I have reviewed the Contributor Guidelines.
• I agree with the terms of the HOOMD-blue Contributor Agreement.
• My name is on the list of contributors (sphinx-doc/credits.rst) in the pull request source branch.
• I have summarized these changes in CHANGELOG.rst following the established format.

[github-actions]

This pull request has been automatically marked as stale because it has not had recent activity. It will be closed if no further activity occurs.

[joaander]

Now that 5.4 is out, this is next on my list to review. I'll look at the proposed changes soon.

[mphoward]

Thanks! I’ve also asked Kwabena to merge up trunk-minor to keep this current.

[mphoward]

Thanks @wkdarko! This looks good to me based on our internal rounds of review. I had a couple small requests below related to the fixes you pushed to the communicators, then I think it should be good to go from my side.