Add latency property to logger middleware functionality

[jondeweydev]

Project Queries in the web app will be updated to include this property once functionality is added to logger to calculate the timestamp (when the query was initially sent) and when the query request was responded back to.

It will be necessary to update the logger to include this property in the receiving of res.locals.graphQLGate as well as the sending of the data to the web app's backend.