[FastAPI] Remove dependency on `openssh` tools
We'd like to remove the dependency on using externally provided tools for SSH public keys.
This will without a doubt increase performance overall, as well.
Prefer a standard Python module made to check and use SSH public keys; we need to read fingerprints and check the validity of them.
find ./aurweb -type f | xargs grep 'ssh-keygen'
Edited by Kevin Morris