Add a "copy to clipboard" button next to "Edit"

[towc]

It would be nice to be able to quickly copy-paste the main code for every section to your own editor, to do the fiddling where you feel more comfortable.

Currently, I need to either

• click on "Edit", wait for tab to load, Ctrl+a, Ctrl+c, paste to my editor, go back to browser and close rogue tab; or
• start selecting the code, scroll (scrolling down while selecting takes longer than scrolling up, so I scroll down first, and select upwards), Ctrl+c, and paste to my editor

As a vim user, it would be immensely more pleasant if the steps were

• click a button, and paste to my editor

Given not many people might prefer using their own editor, I volunteer for making a PR to implement this, once there's an indication it could be merged, rather than any button being considered visual clutter