edk2-vscode: Visual Studio Code plugin for EDKII files

There is a Visual Studio Code plugin for working with Microsoft Project Mu:

https://firmwaresecurity.com/2019/10/01/musupport-a-vs-code-extension-to-support-project-mu/

There is also another VS Code plugin for working with EDK2, which appears to be about 3 months old:

Develop smoothly EDKII/UEFI:
* Add FDF syntax highlight and destionation
* Add DSC syntax highlight and destionation
* Add DEC syntax highlight and destionation
* Add INF syntax highlight and destionation
* Add UNI syntax highlight
* Add VFR syntax highlight

https://github.com/WalonLi/edk2-vscode