Add Support for ScyllaDB (Cassandra-Compatible)

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Currently, Wren AI supports SQL-based warehouses for semantic querying and AI-powered SQL generation. To extend its usability for transactional and distributed NoSQL systems, it would be valuable to add support for ScyllaDB, a high-performance, Cassandra-compatible database.

This would enable:

• Querying large transactional datasets with low latency
• Using ScyllaDB as a first-class data source alongside existing SQL warehouses
• Expanding Wren AI use cases into financial, IoT, and time-series applications
• Enabling multi-database orchestration with both SQL and NoSQL systems

By integrating ScyllaDB, Wren AI could support both analytical and operational workloads, increasing its adoption across high-throughput and distributed environments.