Search in Jisho per Wilson Oh

This add-on adds an additional context menu item on the selected text. Upon clicking on it, a new tab will be opened with the search item in jisho.org. If there is an existing tab with jisho.org opened, that tab will be updated with the new search item and then highlighted (navigated to).

The main inspiration for this add-on is to save the steps of selecting a text -> ctrl-c -> open a new tab/navigate to tab with jisho opened -> ctrl-v -> enter. With the add-on, the steps are now simply select a text -> right-click -> Search in Jisho.