Add support for OAuth authentication on AWS #43
Description
Databricks now supports:
- OAuth for Databricks service principals: https://docs.databricks.com/dev-tools/auth.html#oauth-m2m-auth
- OAuth for Databricks users: https://docs.databricks.com/dev-tools/auth.html#oauth-u2m-auth (need to validate if it could be done for Splunk extension)