Not duplicate things with resolver and schema

[Dracks]

Is your feature request related to a problem? Please describe.
I don't like to repeat work, and create a variable of schemas and a variable of resolves, can always be a focus of problems.

Describe the solution you'd like
Someway, maybe using macros, create a uniq schema with the resolvers, to generate the schema definition, and be sure that the same field has the correct resolver

Describe alternatives you've considered
Something like type-graphql, will be a good idea:

@query(type="String)
function hello
 return "World
end

schema = Dict("hello"=>hello)
graphql.schema(schema)

Additional context
Add any other context or screenshots about the feature request here.