Migrate to DCR-based custom logs

[BernieWhite]

Currently PSRule for Azure Monitor uses the preview Data Collector API.

A new option is available that supports Azure AD identities, using DCR-based custom log collection.

This will support #28

https://docs.microsoft.com/en-us/azure/azure-monitor/logs/custom-logs-migrate
https://docs.microsoft.com/en-us/azure/azure-monitor/logs/tutorial-logs-ingestion-portal
https://docs.microsoft.com/en-us/azure/azure-monitor/logs/tutorial-logs-ingestion-api
https://docs.microsoft.com/en-us/azure/azure-monitor/logs/logs-ingestion-api-overview

• Add Bicep code for deploying custom log/ data collection endpoint/ data collection rule.
• Add convention for importing results using service principal.
• Add fall back for configuring service principal with standard Azure environment variables.
• Update documentation.
• Add support for x-ms-client-request-id header.