## User Story:
As an editor who uses the visual editor to edit pages, I would like to be able to easily add existing labels to a page during the "publish changes" stage, so that I do not need to manually add labels elsewhere.
## Acceptance criteria:
- A new MultiselectLookup field is present in the publish changes dialog, with which it is possible to autocomplete on any of a user's watchlist labels.
- A new MultiselectLookup field is present in the publish changes dialog, with which it is possible to autocomplete on any of a user's watchlist labels. The labels are available from the action=userinfo API, and should not be loaded at page load timeThere will be a hyperlink from there to Special:WatchlistLabels.
- ..- Any number of labels will be able to be selected.
## Details for QA:
Example suggestions for test cases or instructions for approaching testing
## Designs:
Links or screenshot of design