R3 updates

Type of change

• Bug Fix
• Feature

Does this introduce a change in the core logic?

• [YES]

Does this introduce a change in the cloud provider implementation, if so which cloud?

• AWS
• Azure
• GCP
• IBM

What is the current behavior?

• Support of the last R3 Manifest schema
• Refreshed documentation and added sphinx docstring style.
• Added new file service ingestion flow.

What is the new/expected behavior?

• Publish updates that makes the code vendor agnostic (it will require an additional implementation for each vendor)

Have you added/updated Unit Tests and Integration Tests?

• [YES]