Add PY extensions

[MichaelCurrin]

https://medium.com/young-coder/has-vs-code-become-the-best-ide-for-python-bf0f92d2aef4

Pylance. The Python extension has always had IntelliSense support. But Microsoft’s new Python language server is much faster and has a deeper understanding of typing and the core Python libraries. It’s also the second reboot in as many years. Native Notebooks. Microsoft is previewing a new native implementation of data science Notebooks. It integrates cleanly in VS Code and offers significantly improved performance. PyTorch for Windows. Microsoft recently took over the development and maintenance of the popular machine learning library from Facebook. This all but guarantees better integration in the future. Visual Studio IntelliCode. This AI-based version of IntelliSense understands the context of your code and uses it to make suggestions. Microsoft currently provides it for just a few languages, including C#/C++, TypeScript/Java, and Python.