[DRAFT] Chore: integrate with ibis server

[onlyjackfrost]

Integrate with Wren-engine Ibis server

Preview API

schema

previewSql(data: PreviewSQLDataInput): JSON!

input PreviewSQLDataInput {
    sql: String!
    projectId: Int!
    limit: Int
  }

Get Manifest API

field mdl is base64 encoded manifest JSON string

schema

getMDL(data: GetMDLInput): GetMDLResult!

input GetMDLInput {
    hash: String!
  }

type GetMDLResult {
    hash: String!
    mdl: String
  }