* Include raw hostkey bytes in debug output
* Recognize LANcom LCOS software and support extraction of ssh-ed448 key type
LANcom router devices appear to be primarily used in Germany (see [1]
for examples on the public Internet), and they appear to support the
`ssh-ed448` key type which is documented in [2], but which has never
been supported by any as-yet-released version of OpenSSH.
[1] https://www.shodan.io/search?query=ssh+%22ed448%22
[2] https://datatracker.ietf.org/doc/html/rfc8709#name-public-key-format
Because the `HostKeyTest` class was mutating its static/global
`HOST_KEY_TYPES` dict, this class could not actually be used more than once
in a single thread!
Rather than mutate this dict after parsing each key type
(`HOST_KEY_TYPES[host_key_type]['parsed'] = True`), the `perform_test`
method should simple add the parsed key types to a local `set()`.
* RSA key size comments duplicated for all RSA sig algs
* Save results on completion of testing a hostkey
* Revised list names because they operates against all keys now not just rsa.
* ensure all required fields added for non-rsa keys
* Correction to the saving of comments against non-rsa keys
