VS Code Extension improvements

The extension is available from the VS Code Marketplace.

New features

• The artillery-plugin-fake-data plugin will now appear listed under config.plugins, with all different available functions listed to customise their options

• config.environments will now have full Intelisense support, with all available config options shown when an environment is listed

• Intellisense support for arbitrary key:value pairs in:
  • HTTP engine: cookies, headers and form fields
  • SocketIO engine: query and extraHeaders fields
  • Websocket engine: headers field