Update graphql dev command to use new Neo4j GraphQL library

[johnymontana]

The graphql dev command should be updated to make use of the new Neo4j GraphQL library

Currently, the following command will start a local GraphQL server running on port 4000, using neo4j-graphql.js:

grandstack graphql dev --types "type Person{name: String}" --neo4j-user neo4j --neo4j-uri bolt://localhost:7687 --neo4j-password letmein --graphql-port 4000

This command should be updated to use the same command flags and functionality, but use @neo4j/graphql instead of neo4j-graphql.js. The logic for this is defined in this file.