Workspace-local extensions in VS Code.

1. Generate a VS Code extension using yo code.
2. Symlink the extension to ~/.vscode/extensions/[id].
3. Disable the extension on every workspace.
4. Enable the extension on target workspace.

Removing extra fluff in case the VS Code extension is part of a larger project with build infrastructure:

• .eslintrc.json
• CHANGELOG.md
• vsc-extension-quickstart.md
• .vscode
• In package.json: eslint stuff

Things to ignore in .gitignore:

• out
• node_modules