Utilize Projects and Workers concept of Prefect 2

[SorooshMani-NOAA]

Right now these features are still in beta mode:

• https://www.prefect.io/guide/blog/introducing-prefect-workers-and-projects/
• https://docs.prefect.io/latest/tutorials/projects/
• https://docs.prefect.io/latest/concepts/projects/
• https://docs.prefect.io/latest/concepts/work-pools/#worker-overview
• https://discourse.prefect.io/t/whats-the-role-of-agents-and-work-queues-and-how-the-concept-of-agents-differ-between-prefect-1-0-and-2-0/689

This might also help with ECS task flows and placement:

• https://prefecthq.github.io/prefect-aws/ecs_worker/#prefect_aws.workers.ecs_worker.ECSWorker

[SorooshMani-NOAA]

For now we decided to move away from Prefect. Needs to be revisited later.