Problem Description

Often, I find myself copying and pasting request data. My current mitmweb workflow is View -> raw, then selecting all, then copying

Proposal

I would like a button that simply copies the raw response. I think that raw response is the most useful here and also the easiest to implement. Example of what this could look like:

Alternatives

2 copy buttons, one for raw, and one for formatted. This would be more complex, and more importantly my workflow doesn't depend on this (eg, "sending" images to the clipboard) and not as useful as a raw copy option which makes this not worth it in my opinion.

I don't think it would be that hard for me to write this PR, but I wanted to post here for feedback first.