Graphql-engine: graphQL field deprecation

[dsandip]

from Ben (cherre.com):

Reading material:
https://medium.com/@kevinsimper/how-to-deprecate-fields-in-graphql-52fbd03fb9d7
https://www.apollographql.com/docs/graphql-tools/schema-directives.html

[jasonmorganson]

Here is a good article on deprecating fields and how it could look in the response and GraphiQL inteface: https://medium.com/@kevinsimper/how-to-deprecate-fields-in-graphql-52fbd03fb9d7

[tirumaraiselvan]

Closing this in favour of this broader issue: https://github.com/hasura/graphql-engine/issues/2943