[Feature] Need support more ssh key algo

[capricornxl]

When i login a teleport host with vnet, Windterm show:

kex error : no match for method server host key algo: server [[email protected]], client [ssh-ed25519,ecdsa-sha2-nistp521,ecdsa-sha2-nistp384,ecdsa-sha2-nistp256,rsa-sha2-512,rsa-sha2-256,ssh-rsa,ssh-dss]