User based API keys

There’s currently no way to make user based API key. It’s only possible to create them on an organization level and it requires us to micro-manage API keys and their permissions in order to distribute them to teams (e.g. for usage with spacectl & terraform login for the registry).

It would be good to allow users to create their own API keys which are immediately bound to the permissions they have (and change with permission changes of the user they’d get later).