Add pyproject.toml file

[jGaboardi]

Resolves #415 and based on geopandas/geopandas#2419, and geopandas/geopandas#2512.

Still may need to work out the kinks later. First time trying this.

[martinfleis]

Is it possible to remove setup.cfg and use only setup.py to deal with versioneer and pyproject?

[martinfleis]

versioneer should be fine with specs in pyproject.toml instead of setup.cfg - https://github.com/python-versioneer/python-versioneer/blob/master/INSTALL.md#common-steps

[jGaboardi]

Seems this is a bit more complicated for flake8 and may require another package: pyproject-flake8.

[jGaboardi]

@martinfleis Welp... I am not sure how to proceed with this... Should we just keep the stuff in setup.cfg for now?

[jGaboardi]

Adding "versioneer[toml]==0.26" seems to resolve the build for testing environments (see here), but not for doc building.

[martinfleis]

Just leave cfg as it id then.

[codecov]

Codecov Report

Merging #420 (d5e5083) into main (81cdec4) will decrease coverage by 0.0%.
The diff coverage is n/a.

@@           Coverage Diff           @@
##            main    #420     +/-   ##
=======================================
- Coverage   95.9%   95.9%   -0.0%     
=======================================
  Files         13      13             
  Lines       2967    2957     -10     
=======================================
- Hits        2846    2836     -10     
  Misses       121     121             

Impacted Files	Coverage Δ
momepy/coins.py	95.5% <0.0%> (-0.2%)	⬇️
momepy/graph.py	98.0% <0.0%> (ø)
momepy/shape.py	91.5% <0.0%> (ø)
momepy/utils.py	99.4% <0.0%> (ø)
momepy/weights.py	100.0% <0.0%> (ø)
momepy/elements.py	96.7% <0.0%> (ø)
momepy/dimension.py	98.4% <0.0%> (ø)
momepy/diversity.py	98.1% <0.0%> (ø)
momepy/intensity.py	99.0% <0.0%> (ø)
momepy/distribution.py	97.4% <0.0%> (ø)

[martinfleis]

I guess we can merge this.