This PR adds project owner information to the personal dashboard's
project payload.
To do so, it uses the existing project owners read model.
I've had to make a few changes to the project owners read model to
accomodate this:
- make the input type to `addOwners` more lenient. We only need the
project ids, so we can make that the only required property
- fall back to using email as the name if the user has no name or
username (such as if you sign up with the demo auth)
This PR adds some of the necessary project data to the personal
dashboard API: project names and ids, and the roles that the user has in
each of these projects.
I have not added project owners yet, as that would increase the
complexity a bit and I'd rather focus on that in a separate PR.
I have also not added projects you are part of through a group, though I
have added a placeholder test for that. I will address this in a
follow-up.
