Get a list of projects of which a specified user or group is a member

[thw0rted]

I'm a server admin, and would like to use the API to get a list of non-public projects that a particular user or usergroup (OIDC) would see when they log in. I believe I can look up membership each individual project (/projects/1/members, /projects/2/members etc) but of course this isn't going to scale well on an instance with many projects. Is there a faster way? (If not, would this be an appropriate feature request?)

[stonezdj]

No such API so far.