Motivation
VS Code is my editor of choice. It seems like it would be quite nice to get templated, sensible defaults for the settings.json file at least, plus associated .gitignore config.

I know that some people don't like adding tool-specific config to .gitignore files, in favour of a global .gitignore but I think that's a bit extreme - it doesn't hurt to add a few lines for the different popular editors.

Summary of desired enhancement
Implement an interface for adding good default VS Code config. Some imagination needed for other VS-code specific functionality, if there is enough we could perhaps do usethis editor vscode. I know that the R usethis does something really cool by detecting the currently open file (see #80) - perhaps such integrations would be possible in VS Code too? But then thought is needed about what to do when the integration isn't set up, etc.