auth: Add type alias for custom auth. options
auth: Add type alias for custom auth. options

scylladb/scylla,avikivity/scylla,scylladb/scylla,scylladb/scylla,scylladb/scylla,duarten/scylla,avikivity/scylla,avikivity/scylla,duarten/scylla,duarten/scylla