Add VS Code Overview

[Adrianamm]

Part of stage 0's required tools. This page should explain what VS Code is, the WPILib extension, and how to navigate it

[Adrianamm]

This issue is being worked on

[TheMysteriousD]

https://gist.github.com/TheMysteriousD/4071d74956e30d8031e8f817e127e52e

[TheMysteriousD]

writing it in markdown due to inability to access vscode at this time

[TheMysteriousD]

Mostly finished. I just need someone who knows wpilib to write a section that explains how to do common tasks in vs code.