Add AAD application owner and AAD token retry

• Add owner to AAD application for service principal
• Add scope support for Databricks internal users
• Add retry to AAD token fetch

Update service principal and SP group name input

1. Grant the created SPs cluster creation entitlements
2. Add group_name as output
3. Show an example usage of the infra module together with the project in the docs

Databricks MLOps Azure Infrastructure Module with Service Principal Creation

Initial experimental release of Databricks MLOps Azure Infrastructure Module with Service Principal Creation. This module is subject to change and feedback is welcome!