Create LICENSE

[BenCretois]

Add a LICENCE file with the MIT licence

[frafra]

• The LICENSE file is not in the python folder, so it will not be copied to the projects generated with the Python template, but it would only signal that this repository has a MIT license
• The MIT licence is incompatible with the metadata in both, as they are using GPLv3:
  • https://github.com/NINAnor/python-template/blob/e07b9cf8e0cc91cdf1d41b2f1056c318eb93ea59/python/pyproject.toml.jinja#L15
  • https://github.com/NINAnor/python-template/blob/e07b9cf8e0cc91cdf1d41b2f1056c318eb93ea59/pyproject.toml#L15
• Missing license-files field in pyproject.toml: https://packaging.python.org/en/latest/specifications/pyproject-toml/#license-files

I would not change the licence to the python template right away, since that would automatically change the licence of all the projects that have been generated with this template, which is a major change.

[nicokant]

What about adding a question about license, so that it's compatible for older projects and opt in for new/updating ones?

Could be boolean (do you want to include a default FOSS license?)

[frafra]

I think we should have the GPLv3+ as file for all projects. That is what the issue is about.
I suggest having a different issue to extend support to other licences and have a discussion internally.

[BenCretois]

Okay, I added the LICENCE file in the python folder and licence-file in the pyproject.toml.jinja. The LICENCE is now also GPL-3.0+

[frafra]

Avoid changing the main pyproject.toml, or add a LICENSE file there as well :)