Subscription auth where

[angrykoala]

This PR adds support for where argument for subscriptions. The behaviour will be the same as for where parameter (i.e. no nested where or operations)

where supports jwt params.

Behaviour between roles and where is still untested

[neo4j-team-graphql]

Thanks for the documentation updates.

The preview documentation has now been torn down - reopening this PR will republish it.

[angrykoala]

PR closed as it is stale