Implement pagination for /api/projects/list and /api/users/list #3487
Description
Currently the endpoints /api/projects/list and ``/api/users/listare not paginated and return ALL resources visible to the user. For global admins there can be many (e.g. thousands), which leads to heavy db queries and large responses. The UI also calls/api/projects/list` just to check if user has some projects, which is unnecessary expensive.
The endpoints need to be paginated similar to /api/runs/list, /api/fleets/list, etc.