Implement GraphQL query params

[ra0x3]

• Per https://github.com/graphql/graphql-spec#query-syntax
• We should also support the ability to add params to a GraphQL query
• Should be pretty straightforward to extract these from the request and pass them to the query-parser/sql

[0xmovses]

Hesitant to add this into our current graphql-parser api while async-graphql is being added, to avoid a similar situation as a few weeks ago. @deekerno Hold on this until #877 get's merged? Probably async-graphql gives us this out of the box.

[deekerno]

async-graphql does allow for this, and it may be partially addressed by #822.

[ra0x3]

@rvmelkonian See this

[ra0x3]

Closing this until we get a unified GraphQL solution that solves #1145