Test archive debugging API

[Muusssi]

Is your feature request related to a problem? Please describe.
When debugging any unexpected behaviour, it would be very useful to get information of what exactly is archived in the database.

Describe the solution you'd like
An API where one could query all the data related to a build in the the test archive database with only ids and no sensitive data such as test names or repositories. This could be shared to help debugging

Describe alternatives you've considered
While simply improving the normal APIs should also help debugging having this data without identifying information could be more easily shared by users. Also probably much easier for users to help debugging since they might not have access to the database.