Use coroutines to do submission requests.

[weinbe58]

Is your feature request related to a problem? Please describe. Submitting a large batch of tasks can take a long time because of the many HTTP requests required to submit all tasks in a batch.

Describe the solution you'd like Using Coroutines can speed this up by opening up multiple connections concurrently.

Describe alternatives you've considered N/A

[weinbe58]

https://docs.aiohttp.org/en/stable/