update trees-create password for newer libsodium and trees
script needs to be updated to output the pwhash_algo field, but also it calls argon2i, and needs to be updated for newer rbnacl (5.0.0) so it works... using this updated function: https://0xacab.org/riseup/nest2/blob/develop/common/models/storage_key.rb#L264... also the constant algo needs to be changed.