Support Object Types

[rafalp]

Next API should support GraphQL type definition.

TODO

• Define fields using field: type syntax
• Define fields using field = ObjectType.field(...) syntax
• Define fields using field: type = ObjectType.field(...) syntax
• Define fields using @ObjectType.field(...) syntax
• Define type using __schema__ = gql(...) syntax
• Define fields resolvers using @ObjectType.resolver()
• Define fields returning default scalars
• Define fields returning custom types
• Define fields arguments on resolvers for built-in GraphQL scalars
• Customize fields arguments behavior
• Define fields arguments on resolvers for custom scalars
• Define fields arguments on resolvers for input types
• Define fields aliases using __aliases__ magic attribute
• Set outnames on fields arguments
• Validate field names in @ObjectType.resolver()
• Validate args names in @ObjectType.resolver()
• Validate args names in @ObjectType.field()
• Validate args out names in @ObjectType.resolver()
• Validate args out names in @ObjectType.field()
• Validate double descriptions on types
• Validate double descriptions on fields
• Validate double descriptions on arguments

[rafalp]

Done in #32