Overhaul repo infrastructure

[jGaboardi]

This PR:

• resolves adopt pyproject.toml #325
• resolves generate report for CI failure #354
• adopts pyproject.toml for packaging
• drop versioneer in favor of setuptools_scm for version control
• adopts ruff for linting and lints repo
• cleans up testing ends (see here)
• removes all redundant files
• tests again both libpysal@main

[jGaboardi]

@martinfleis Any chance for a review on this? 99.99% infrastructure/formatting changes and no changes in code functionality.

[martinfleis]

One note in code.

The CI failure is expected?

Can you make sure that pre-commit.ci is green?

[jGaboardi]

The CI failure is expected?

The CI failure is recorded in #346 and only started with pysal/libpysal#511. I haven't been able to track down the reason.

[jGaboardi]

Can you make sure that pre-commit.ci is green?

Oh man. Not sure how this fell through the cracks. The PR had been passing ruff+black locally for me, not sure how all these got reverted. I'll look into it.

[jGaboardi]

pre-commit.ci is now back to green.

[jGaboardi]

ugh... many more failures after ruffing.

[jGaboardi]

@martinfleis All tests back to green (except the 'expected' 3.11-DEV' failure) after my ruffing debacle. Thanks for your patience.

[martinfleis]

looks good. thanks!