Generated svg source in playground

[Sam-Apostel]

I noticed during testing I found myself wanting to check out the generated svg's source.
I added a 'code' tab to the playground to view the generated svg's source. I think this might help some others debugging their jsx and css if they can see the direct changes reflected as code too.

There's a lot of potential for adding debugging functionality but I want to prevent rewriting the browser devtools.
How far would you like to see this go?

[shuding]

Love that idea!