title: Keybinding to open a specific file in vscode
body: <p>I presume this is achievable through editing <code>keybindings.json</code>. As I can't seem to find a list of available commands, I've got this far through auto-complete:</p>
  
  <pre><code>    {
          "key": "SHORTCUT",
          "command": "workbench.action.files.openFile",
          "args": {
           // ARG TO POINT TO SPECIFIC FILE
          }
      }
  </code></pre>
  
  <p>Seems a simple task but I can't seem to find the documentation I'm after. If someone could also point me to the relevant docs I'd be grateful.</p>