Add expand button to view returned results using full screen #226

When executing the request, it is a good idea to provide a button that previews the returned results in full screen. For example, when the data returned by the server is huge, providing a full-screen preview can facilitate developers to preview the results.

For example:

One idea is to provide an expand button. When the user clicks, a large pop-up box will be displayed for previewing the returned results.