Show code actions in a child frame, just like documentation

[bobbbay]

Hey y'all,

I've been scouring the internet for hours now, trying to figure out how I can do this:

But for errors, which currently show as:

That disrupts the code. I would really love if I was able to have errors in their cute little miniframe, but can't find the documentation for it :(.

[bobbbay]

(update: I realized that showing errors in a child frame can be done with Flycheck, not lsp-ui :P. Would still love to have the code actions in a child frame, though.)