Feature: Display the response size

[JPustkuchen]

The response size already seems to be handled by the plugin, as it shows

The response size exceeds 20 KB. Syntax highlighting has been disabled for performance reasons. This value is configurable in the options menu.

Sadly the size isn't shown in the UI, but that would be quite helpful for debugging in some cases. Perhaps it could be added here:

Something like this perhaps:

Little addition, but really awesome and helpful.

Thank you for this genius plugin! :)