Add pyproject.toml to version tagger

[bcl]

Currently tito only supports updating the version in setup.py, which means that it is difficult to move a project using tito to use pyproject.toml from https://peps.python.org/pep-0621/

[FrostyX]

Hello @bcl,
please take a look at man tito.props, the VERSION_TEMPLATE section. I think it should work for your use-case.

You can see it configured in the Tito project itself
https://github.com/rpm-software-management/tito/blob/master/.tito/tito.props#L12

[praiskup]

Note that pyproject.toml file is a standard file, something like setup.py and templating it is quite complicated task (you most probably need to copy-paste the content and maintain both the template and the file itself).

It would be nice if tito supported this natively, similarly to the support for setup.py version bumping.

[praiskup]

Example:
https://github.com/fedora-copr/resalloc-ibm-cloud/blob/main/pyproject.toml