Persist Neo4j driver

[jeicoo]

It seems that the extension is creating the Neo4j driver and adding it to the application context.

The application context is being created and destroyed every request, that means the extension is creating the driver for each request that needs it. However, as per Neo4j documentation the driver object should be avaliable

A Neo4j client application will require a driver object instance in order to provide access to the database. This object instance should be made available to all parts of the application that need to interact with Neo4j.

https://neo4j.com/docs/developer-manual/current/drivers/client-applications/

Also, I believe it would take more time if the driver object is being created multiple times in an application instead of creating it once and creating a new session per request. What do you think?