API to list projects for a user and/or within a namespace

Description

Right now there is no straightforward way to list, via the API, all projects within a namespace.

If you know that a namespace is a group, you can list the group's projects:

GET /groups/:id/projects

But, if the namespace is a user, then you are out of luck - There seems to be no way to simply list all projects under a user namespace.

This does not exist:

GET /users/:id/projects

You can search, but this does not limit the search query to match the namespace. E.g. searching for jreinhart would yield both jreinhart/foo and bar/jreinhart projects. Also, adding a trailing slash e.g. /projects?search=jreinhart%2f does not work (it yields nothing).

Proposal

An API to get all projects within a namespace (be it a user or a group):

GET /namespaces/:id/projects