Implement GraphQL endpoint to determine if an environment is on expert mode or halted

[jptrindade]

This is the continuous call that the frontend does every 5 seconds:

GET api/v2/environment/{environment-id}?details=false
Needed to know if we are in Expert mode, or if the environment is halted.

Build a GraphQL query that allows filtering on environment-id and that is able to return the attributes that determine if we are on expert mode or if the environment is halted