Consider if code actions should be available in the context menu

[matklad]

I've long bemoaned the lack of traditional at this point 💡 UI for executing LSP code actions:

https://rust-analyzer.github.io/blog/2020/09/28/how-to-make-a-light-bulb.html

As I've learned today, Emacs actually has a very similar UX, context menu S-f10! I think it would be a great re-use of existing functionality to show code actions in the context menu. Eg, here:

I'd love to see "extract variable"