Expose the RQLSuggestionBuilder on a /rql-suggest route
The cubicweb RQLSuggestionBuilder (cf https://forge.extranet.logilab.fr/cubicweb/cubicweb/-/blob/branch/4.x/cubicweb/rqlsuggestions.py#L28) can be exposed on a new route, for instance /rql-suggest, to make it available to client code.