Set X-Forwarded-For header

[guilheb]

Hello,

Great extension. I am using my web browser on my local machine but my IDE is actually on a separate machine (which I access through Remote Desktop).

It would be nice if there would be an option to set the X-Forwarded-For header. That way, the Xdebug session would be forwarded to my development machine.

I currently use https://github.com/MisterPhilip/x-forwarded-for/ and it works fine, but for privacy reasons, I would prefer to only set this header when Xdebug Helper is active.