task (3): Integrating the S3 upload logic with the GraphQL resolver

[bensooraj]

S3 Engine offloads the audio upload task from the GraphQL resolver.
The idea being, the client should never be held up for any upload or processing tasks.

Ideally, the mobile client will upload the asset/audio directly to S3 using a signed URL, saving us network bandwidth, CPU time and a better overall experience for the user.

Sample mutation for uploading an audio short:

mutation($audio_file: Upload!) {
  audioshortCreate(
    audioshort: {
      title: "sample  title 2"
      description: "sample description 2"
      creator_id: 2
      category: "hello"
      audio_file_url: "dummy.com"
      audio_file: $audio_file
    }
  ) {
    id
    title
    audio_file_url
    creator {
      id
      name
    }
  }
}

Altair client UI screenshot: