Description
Is your feature request related to a problem? Please describe.
I'm setting up prettier in a Lerna monorepo, and I want to make sure I've got it set up correctly. It's not clear to me how to verify whether the extension is using the version I intended, or the pre-bundled one. I noticed a warning mentioned at #341, but I don't see this warning in the prettier output for even a simple test workspace with no local prettier installed at all. (I do not have any global prettier installation.)
Describe the solution you'd like
Have the prettier version always visible in the status bar. Ideally, also indicate where prettier was found when clicking on the status bar entry. (Probably unrelated side note: that entry can have a single or double check. I don't know what that means and don't see it documented.)
If that's not feasible, at least output which prettier binary/version is being used for formatting in the output window.
(Or if this already exists somewhere I don't see, document that fact!)