CAMEL-2939: Camel Cassandra 3 CQL3 first edition

Handle Cassandra authentication

Improve ResultSet to message body conversion

Added ReadMe.md

Update ReadMe.md

Rename package

Upgrade dependencies

Implement IdempotentRepository using Cassandra

Implement AggregationRepository using Cassandra

Renamed CassandraQl into Cassandra

Refactored CQL generation

Removed PKHelper in favour of generateInsert, generateDelete... methods
CAMEL-2939: Fixed CS
CAMEL-2939: Added to kit