Add pyproject.toml

[magnusuMET]

• Adds dependencies such that pip can resolve them
• Replaces deprecated import pkg_resources for use by python 3.12 and up

[jgliss]

@magnusuMET thanks for this PR. Could you describe in a little more detail why you suggest this change and what benefits it brings over using setup.py?

Also, will it affect the conda release recipe: https://github.com/jgliss/geonum-feedstock/blob/master/recipe/meta.yaml?

Cheers to MET :-)

[jgliss]

Please also note #25 which should fix the pipeline once it's merged :)

[magnusuMET]

setup.py does not allowing specifying dependencies, meaning pip can not resolve and install them for us. That means downstream users has to keep track of the dependencies of this package and manually install them (add them to their pyproject etc., requirements). Having this functionality means a pip install is as simple as the way one can install through conda.

I do not think the move to pyproject.toml should affect the conda recipie

[codecov-commenter]

Codecov Report

Attention: 3 lines in your changes are missing coverage. Please review.

Comparison is base (efdc3cd) 90.47% compared to head (db763a8) 90.30%.

Files	Patch %	Lines
geonum/_init_helpers.py	66.66%	3 Missing :warning:

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Additional details and impacted files

```diff @@ Coverage Diff @@ ## main-dev #24 +/- ## ============================================ - Coverage 90.47% 90.30% -0.18% ============================================ Files 15 15 Lines 1376 1382 +6 ============================================ + Hits 1245 1248 +3 - Misses 131 134 +3 ``` | [Flag](https://app.codecov.io/gh/jgliss/geonum/pull/24/flags?src=pr&el=flags&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=Jonas+Gli%C3%9F) | Coverage Δ | | |---|---|---| | [unittests](https://app.codecov.io/gh/jgliss/geonum/pull/24/flags?src=pr&el=flag&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=Jonas+Gli%C3%9F) | `90.30% <66.66%> (-0.18%)` | :arrow_down: | Flags with carried forward coverage won't be shown. [Click here](https://docs.codecov.io/docs/carryforward-flags?utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=Jonas+Gli%C3%9F#carryforward-flags-in-the-pull-request-comment) to find out more.

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[jgliss]

Looks good now, thanks @magnusuMET