Nanobind port: Cluster module

[tfteague]

Description

Translate the Cluster module from cython to nanobind.

Motivation and Context

One component of the push to translate the freud from cython to nanobind.

How Has This Been Tested?

The cluster tests were not modified, but now all pass.

Types of changes

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds or improves functionality)
• Breaking change (fix or feature that would cause existing functionality to change)
• Documentation improvement (updates to user guides, docstrings, or developer docs)

Checklist:

• I have read the CONTRIBUTING document.
• My code follows the code style of this project.
• I have updated the documentation (if relevant).
• I have added tests that cover my changes (if relevant).
• All new and existing tests passed.
• I have updated the credits.
• I have updated the Changelog.

[joaander]

Thanks!