Fix syntax error position indicators in parameters queries

To fix #2193 prefix_length member variable has been added to ParsedURL
that is set to the length of "/service/version/profile/" prefix
when the prefix is accepted by the parser.
Also BOOST_FUSION_ADAPT_STRUCT for osrm::server::api::ParsedURL
has been moved from header to url_parser.cpp to speed up compilation
of CUs that do not use the fusion adaption.

src/server/service_handler.cpp

@@ -48,7 +48,7 @@ engine::Status ServiceHandler::RunQuery(api::ParsedURL parsed_url,
         return engine::Status::Error;
     }
 
-    return service->RunQuery(parsed_url.query, result);
+    return service->RunQuery(parsed_url.prefix_length, parsed_url.query, result);
 }
 }
 }