access: sftp: public key authentication from user defined key (ed25519)
Adds more public key authentication options.
Attempt public key authentication by trying common default file paths: ~/.ssh/id_rsa ~/.ssh/id_ed25519 ~/.ssh/id_dsa ~/.ssh/id_ecdsa
Or a using user specified path to a keyfile.
Existing Authentication-Agent / password authentication options remain unchanged.
Edited by Steven Waddy