title: How to sort by date(createdAt) on a field in list query in aws-amplify?
body: <pre><code>type Test @model @key(fields: ["id", "createdAt"]) {
    id: ID!
    name: String
    createdAt: String!
  }
  </code></pre>
  
  <p>This model created queries: </p>
  
  <pre><code>getTest(createdAt: String!id: ID!): Test
  
  listTests(
    createdAt: ModelStringKeyConditionInput
    filter: ModelTestFilterInput
    id: ID
    limit: Int
    nextToken: String
    sortDirection: ModelSortDirection
  ): ModelTestConnection
  </code></pre>
  
  <p>What should the scheme look like to request a list sorted by date?</p>