Curated content : foreign repositories

[xeronimus]

Besides the repositories that belong to the Zühlke account (automatically fetched from the github api), we want to list additional repos that are not "owned" by the Zühlke organisation account.

Foreign repositories

• our workflow should also gather information (from the github id) for manually specified repos

[RFS-0]

Adding non Zuehlke owned repos is now possible. Such repos are referred to as external repos. A new job (executed as part of the corresponding GitHub action) collects the repos defined in external_contributions.csv. The frontend merges these repos with the Zuehlke owned repos and displays them sorted by stargazer count on the page contributions. External repos are not distinguishable from Zuehlke owned repos (for now).