Add support for Datastax Astra's Cassandra

[Fischchen]

So I've found that the in build implementation don't work with Datastax Cassandra, or am I missing something?
If it's not implemented, I think it would be a valuable addition.

[eatonphil]

Hey, can you describe how it does not work with Datastax Cassandra?

I don't explicit test it. I just test with Cassandra docker images.

[Fischchen]

Datastax dosent show you the Hostname nor the username. They have their own API's and packages you have to use