Remove setuptools dependency

[DimedS]

Description

Remove setuptools dependency as mentioned in #2350

Development notes

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Checklist

• Read the contributing guidelines
• Signed off each commit with a Developer Certificate of Origin (DCO)
• Opened this PR as a 'Draft Pull Request' if it is work-in-progress
• Updated the documentation to reflect the code changes
• Added a description of this change in the RELEASE.md file
• Added tests to cover my changes
• Checked if this change will affect Kedro-Viz, and if so, communicated that with the Viz team

[astrojuanlu]

Failing because of #2350 (comment)

[DimedS]

@astrojuanlu I saw your proposals:
#2350 (comment)
but it looks like they both are breaking compatibility changes?

on a first step currently I just emulated setuptools autodiscovery, but maybe it's not a robust solution.
Actually, if a question is just about package name, looks like we can take it from pyproject.toml: from section

[project]
name = 

but maybe it's not a mandatory that it must be pyproject.toml file there, and it will not be a check for quantity of packages also.

[merelcht]

Generally look good! 👍 Just left a minor comment. Also don't forget to update the release notes.

[astrojuanlu]

The logic looks correct to me 👍🏽

Indeed @DimedS my other proposals were not completely backwards compatible. And relying on pyproject.toml isn't either, because of all the transitions in 0.18 (from 1 pyproject.toml + 1 setup.py, to 2 pyproject.toml, to just 1 pyproject.toml)

Hopefully in the future we'll be able to simplify this logic (or even extract the packages directly from the metadata https://discuss.python.org/t/record-the-top-level-names-of-a-wheel-in-metadata/29494/69?u=astrojuanlu)

[merelcht]

LGTM! ⭐