[Feature Request] Add Enable/Disable Rubocop command

[priverop]

Hello! Thank you for the extension, it's quite useful.

Lately I've wanted to have a new command to disable/enable the whole extension (I attach an example of another VS Extension).

This is because sometimes I'm editing a huge file (with several rubocop offenses) and as I have automatic lint&fix after saving, it takes a long time to do the whole file. And maybe I'm debugging something and I don't need that at the moment. So I have to go to extensions, disable it...

If only I had a command to disable everything...

I can make a PR! But I'd need guidelines on how to do it :)

Thanks!