Autosave queries in query library

[trz-justin-dev]

hi @nholden +1 here. also opened a related bug report

[bug] Query Library should warn before abandoning unsaved changes

Say you've been editing a shared, important query in the Query Library and you click the blue New button to start a small test query. In this case, Retool should warn the user, as changes will not be saved to the original query. A popup is currently shown when navigating away from the current query to another, existing query: You have unsaved changes - are you sure you want to leave? (Cancel, OK) However, when creating a new query while editing an existing query, no such popup is shown. This…