Add something in the UI to allow configuring settings

Frequently when I'm writing a codemod or ESLint rule on the site, I have some objects logged out to the console (with some expanded). Every time I forget this and make a change to the codemod, the data I'm looking at gets blown away.

It would be nice if this was an option that could be disabled in the UI. I'd be happy to do the work if you're open to it.

Having said that, I'd imagine we would need to determine a place in the UI where it was appropriate to show options that aren't specific to the parser. Thoughts?