Batch GraphQL requests

https://github.com/vend/monocle/pull/4463
https://github.com/vend/monocle/pull/4464
https://github.com/vend/monocle/pull/4484

https://www.apollographql.com/blog/apollo-client/performance/batching-client-graphql-queries/

Pros

Avoid the cost of multiple round trips.

Biggest Con

If one of the underlying services is slower than the rest, the effects may be felt across the whole client app.