Implemnt SSH public key management
This implements ssh public key distribution for kanidm, enforcing that
valid ssh public keys are placed into the ssh_publickey attribute, adds
management tools so that accounts can self-service manage their keys,
and finally adds an authorized keys command helper suitable for
sshd_config to utilise.
Add support for command line options to the server. This supports server sid regeneration, persistence, address binding, tls configuration and more. This also improves TLS support in the client tools for CA cert addition to queries.
