Added environment prefix/suffixes for single workspace usage

Added environment ("staging" and "prod") prefixes to service principal display names and suffixes to directories.

Update service principal and SP group name input

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

Databricks MLOps AWS Project Module

Initial experimental release of Databricks MLOps AWS Project Module. This module is subject to change and feedback is welcome!