Allow general user management.
Users with an admin flag.
Like change their info, delete themselves?
Yes, for now just delete themselves because there is no additional info.
For now it is only ID, API Key and Rate Limit.
Users can only add and list URLs for now. Follow #2 for details and progress on URL management.
Keys mandatory now with https://git.sr.ht/~koehr/k0r/commit/f58a9d85666e25d075d67a74d6107c31d47f3980
Initial user created with https://git.sr.ht/~koehr/k0r/commit/449c87d8baa655b925710bedde251312d78fe775
Is it enough to create a user on database creation or should it check for lack of users instead?