Support Spark SQL data source

[andreashimin]

Is your feature request related to a problem? Please describe. Provides users with the ability to connect and set up Spark SQL as a data source, enabling integration with distributed data processing frameworks directly within Wren AI's connection setup.

Describe the solution you'd like

• Add a Spark SQL connector in ibis-server
• Implement Spark SQL connection handling between ibis-server and Wren UI backend.
• Create a UI form for users to set up the Spark SQL data source (e.g., server address, port, authentication).

For more details, see Creating a New Data Source Connector in our CONTRIBUTING.md.

Additional context Add any other context or screenshots about the feature request here.

[goldmedal]

The first step of this issue is implementing the SparkSQL connector on Wren engine side. Wren engine is powered by ibis-project to connect to different data sources.

Refer to ibis pyspark backend, you can follow the guide of adding DataSource to:

• define the connection info
• add the connector
• add test cases

By the way, It would be appreciated if you could also survey how to connect to Databricks using ibis-project. 🙇