Spring Boot Autoconfiguration

[magaton]

It would be nice to have:

https://github.com/neo4j-graphql/neo4j-graphql-java/blob/master/examples/graphql-s[…]graphql/examples/graphqlspringboot/config/Neo4jConfiguration.kt
and
https://github.com/neo4j-graphql/neo4j-graphql-java/blob/master/examples/graphql-s[…]aphql/examples/graphqlspringboot/config/GraphQLConfiguration.kt

in a spring boot autoconfiguration

Motivation: for people who are using spring boot with java, not kotlin.
The only parameter that should be picked up (and possibly overridden) would be:
@value("classpath:schema.graphql") graphQl