Vector type support - Cassandra 5

[conorbros]

As part of supporting the Cassandra 5 release we will need to support for vector types to Shotover. This will mean adding this to the cassandra-protocol for internal Shotover use and cdrs-tokio for testing.

https://cassandra.apache.org/doc/latest/cassandra/vector-search/concepts.html#:~:text=Vector%20Search%20is%20a%20new,modularity%20of%20the%20latter%20feature.

https://github.com/krojew/cdrs-tokio