Add Managed Identity Support (#552)

* Added Managed Identity support for multiple sources (IMDS, App Service, CloudShell, AzureML, Service Fabric, Azure Arc)
* Updated tests
* Updated documentation
* Added new Managed Identity client that currently supports cache and retry policies

Fix Bug: Prevent Empty Region in WithAzureRegion from Overriding MSAL…

…_FORCE_REGION (#545)

* Fixed a bug where if empty region is passed in WithAzureRegion it would override the MSAL_FORCE_REGION

* Updated the first tests

* Removed dead code.

* Update confidential_test.go

* Cleaned up test

Merge branch 'main' into andyohart/managed-identity

Create release.md

Create release.md

If authority segments <3, throw

feat(oauth): add support for dSTS authority type

Update go.yml to remove Integration tests

Removed Integration tests from github actions

Fix gofmt issues

Update RELEASES.md