OneX supports GraphQL API

[colin404]

What would you like to be added:

Go's most commonly used application scenario is to develop an API service. Currently, there are three types of API services: RPC, HTTP, and GraphQL. OneX already supports RPC and HTTP, and also needs to support GraphQL.

Why is this needed:

GraphQL provides a complete and understandable description of the data in your API, gives clients the power to ask for exactly what they need and nothing more, makes it easier to evolve APIs over time, and enables powerful developer tools. So, it is valuable to support GraphQL API.