Update CITATION.cff and release through CI/CD

[lukaspie]

With this PR, we could update the CITATION.cff file, make a new PR, and then (conditionally on that PR being approved), make a new release, all using GitHub actions.

One needs two new workflows:

1. update_citation.yaml: This action is manually dispatched, you need to pass the version tag and whether or not you want to create a new pre-release. It checks whether the supplied version is a correct semver version and then creates a new PR where the version in CITATION.cff is updated.
2. release-on-citation-update.yaml: This one is triggered as soon as that PR is merged into main. It creates a new release using the version that we initially set up.

The whole release process would then be 1) go to Actions, manually trigger the first action (see image), and 2) approve and merge the created PR.

Currently, this chain does not work though because GitHub actions is not allowed to create PRs. This has to be allowed on the organization level in GitHub.

[coveralls]

Pull Request Test Coverage Report for Build 11034947315

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 100.0%

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Totals
Change from base Build 10815454559:	0.0%
Covered Lines:	48
Relevant Lines:	48

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💛 - Coveralls