Customization of editor preferences

Would be cool to have a bit more control over editor view preferences, unless its a reflection of a strong opinion on what good UX is or something.

CodeMirror supports a few nice viewing features such as highlighting the line the cursor is on, or highlighting matching brackets that I think would be super helpful to enable in Yaak. Also, I get that the response pane has a non-editable view, but I think it would still benefit from having a cursor, and the same options as the request pane like bracket highlighting and stuff. would help navigating around the response