Enqueue a job immediately.

Expected args:

• pid - PID for Exq Manager or Enqueuer to handle this
• queue - Name of queue to use
• worker - Worker module to target
• args - Array of args to send to worker
• options: Following job options are supported
  • max_retries (integer) - max retry count
  • jid (string) - user supplied jid value
  • unique_for (integer) - lock expiration duration in seconds
  • unique_token (string) - unique lock token. By default the token is computed based on the queue, class and args.
  • unique_until (atom) - defaults to :success. Supported values are
    • :success - unlock on job success
    • :start - unlock on job first execution
    • :expiry - unlock when the lock is expired. Depends on unique_for value.

Returns:

• {:ok, jid} if the job was enqueued successfully, with jid = Job ID.
• {:error, reason} if there was an error enqueueing job