Add GitHub action to pull project versions from GBF projects

Add a GitHub action to pull the versions from the different repositories.

* Use GitHub API to query for the latest version of the repository (foremost Taskwarrior & Timewarrior)
* Update project versions in [data|https://github.com/GothenburgBitFactory/GothenburgBitFactory.github.io/tree/main/data] folder
* Deploy the new version of the website

The simplest solution would be to have one script pulling all (configured) repositories, but one could also make the repository a parameter of the script, such that it could be triggered e.g. by a release event from a repository.