This adds two small changes to the contributing docs:
1. Instructions to connect to a local Redis REPL
2. Instructions to start `dlv` in headless mode and attach debuggers to it. I modified `.vscode/launch.json` with a new launch debug config and added instructions for vim.
This only effects contributor experience.
- Run Docker dependencies and Webpack when opening project.
- Run/debug configs for Fleet server and UI.
- Basic settings.