Add an `--azure-endpoint` argument to specify the endpoint for Azure Blob Storage

[hiltontj]

Problem

There is no way to customize the endpoint of the targeted Azure Blob Storage. This prevents users from using tools like Azurite.

Proposed solution

Similar to the interface for AWS, for which we expose a --aws-endpoint argument, add a --azure-endpoint argument to the CLI and environment configuration.

This can leverage the object_store crate's ability to specify the Azure endpoint with MicrosoftAzureBuilder::with_endpoint.

Additional context

See Discord thread.

[not-so-rabh]

Hi hI can I pick this up?

[hiltontj]

@not-so-rabh sure!