MLTable to use PEP 561

[TomSB1423]

• Package Name: MLTable
• Package Version: 1.4.1
• Operating System: Windows
• Python Version: 3.8.10

Describe the bug
The MLTable package does not seem to use py.typed markers and therefore python linters dislike this. This is a major inconvenience when liniting rules are enforced inside CI/CD.

To fix this, I have to enable ignore_missing_imports, which is far for ideal, as this treats ALL imported packages as Any.

A simple solution is just to make the MLTable package adhere to python PEP standards, specifically: PEP 561

[github-actions]

Thanks for the feedback! We are routing this to the appropriate team for follow-up. cc @simorenoh @gahl-levy @bambriz @azureml-github @Azure/azure-ml-sdk.

[catalinaperalta]

Thanks for reaching out @TomSB1423! Looping in relevant folks to help out.