[BLD]: switch to Maturin for build, bundle Rust code with package

[codetheweb]

Description of changes

• maturin is used to build the main Python package rather than setuptools
• build & publish to PyPi is its own workflow now and supports manual dispatches
• sdist (source distribution) is tested to ensure the artifact has all files required to compile & run the package

Test plan

How are these changes tested?

Published a test package to test.pypi.org.

[github-actions]

Reviewer Checklist

Please leverage this checklist to ensure your code review is thorough before approving

Testing, Bugs, Errors, Logs, Documentation

• Can you think of any use case in which the code does not behave as intended? Have they been tested?
• Can you think of any inputs or external events that could break the code? Is user input validated and safe? Have they been tested?
• If appropriate, are there adequate property based tests?
• If appropriate, are there adequate unit tests?
• Should any logging, debugging, tracing information be added or removed?
• Are error messages user-friendly?
• Have all documentation changes needed been made?
• Have all non-obvious changes been commented?

System Compatibility

• Are there any potential impacts on other parts of the system or backward compatibility?
• Does this change intersect with any items on our roadmap, and if so, is there a plan for fitting them together?

Quality

• Is this code of a unexpectedly high quality (Readability, Modularity, Intuitiveness)

[codetheweb]

symbolic link, needed for the source distribution to build correctly (otherwise idl/ isn't included)