Deprecate setup.py, setup.cfg and use pyproject.toml

[cgahr]

1. I excluded test_data/samples/* from being run by black, isort and mypy
2. This allows me to run black, isort and mypy for all files and I can remove the configuration of these 3 tools from tox.ini and github ci. Most importantly, there is no explicit usage of setup.py anymore
3. Since setup.py is not used anymore, I removed it. Its code (as far as I can see) was not necessary.
4. I moved all configurations from setup.cfg to pyproject.toml.

For a more in-depth discussion see #79

[cgahr]

tox doesn't fail now!

[bwhmather]

I'm happy with this. Will need to rebase once #80 is in to get CI to pass.

[jgberry]

@cgahr I don't think this plays nicely with .github/workflows/release.yaml. Probably need some tweaking there.

[cgahr]

@cgahr I don't think this plays nicely with .github/workflows/release.yaml. Probably need some tweaking there.

You are correct. Will fix this tomorrow.

[bwhmather]

@cgahr I don't think this plays nicely with .github/workflows/release.yaml. Probably need some tweaking there.

Good spot.

[coveralls]

Pull Request Test Coverage Report for Build 4806040566

Warning: This coverage report may be inaccurate.

This pull request's base commit is no longer the HEAD commit of its target branch. This means it includes changes from outside the original pull request, including, potentially, unrelated coverage changes.

• For more information on this, see Tracking coverage changes with pull request builds.
• To avoid this issue with future PRs, see these Recommended CI Configurations.
• For a quick fix, rebase this PR at GitHub. Your next report should be accurate.

Details

• 0 of 0 changed or added relevant lines in 0 files are covered.
• No unchanged relevant lines lost coverage.
• Overall coverage remained the same at 98.225%

---

Totals
Change from base Build 4802506014:	0.0%
Covered Lines:	1273
Relevant Lines:	1296

---

💛 - Coveralls