Is there any Databricks source connector available or in progress of building by the community?

Yes, there is a Databricks source connector that was requested by the community. However, as per the information available, the connector is not yet available. The community has shown interest in contributing to the development of this connector. You can track the progress of this connector on the [Github issue](https://github.com/airbytehq/airbyte/issues/28161) related to it. On the other hand, there is a Databricks destination connector available and it's being actively improved. The community is also invited to beta test the new versions of this connector. You can find more information about it on this [Github discussion](https://github.com/airbytehq/airbyte/discussions/43997) and this [Github issue](https://github.com/airbytehq/airbyte/issues/34874).