SSH door access integration

[braaar]

We want to

• store SSH public keys on users in mulysa (user editable field)
• add an API endpoint to mulysa that can be queried by the SSH door server or other scripts

The desired API endpoint:

• HTTP GET
• input parameter: SSH fingerprint (string)
• This endpoint takes in an SSH fingerprint, goes through the list of users in mulysa and finds all the users whose SSH public key match the provided fingerprint
• returns either
  • 200 with a list of SSH public keys and information about the corresponding users such as username and whether they have door access
  • 400 invalid fingerprint or something like that