investigate expected cost of cloud deployment, and as well as possible approaches for measuring cost

[jmartin-sul]

from #3

see if back of the envelope estimates could rule out some of our possible implementations, or if they all look close enough in cost to keep pursuing all paths.

this involves two orthogonal sets of choices: how to deploy, and how to measure cost of deployed services.

deployment choices (not all mutually exclusive, but some are):

• ECS
• always on EC2 VM
• thin vs heavy whisper docker container (i.e. is the container built such that it contains the models it needs, or does it download them on startup? whisper models total out to about 13 GB, says @edsu)
• SageMaker vs docker container running whisper (concerns about SageMaker configurability and training data policy captured in [investigate/prototype] speech_to_text_generation_service approach 2: Explore AWS SageMaker #4)

cost estimate approach:

• cost calculator
• deploy and test w/ tagged resources (@edsu seemed to be leaning in this direction, using Add initial Docker container #9 as a starting point for investigation)

[jmartin-sul]

@edsu feel free to claim this and put it in "in progress" if you're already working on it. anyone else, feel free to also assign yourself simultaneously and coordinate, if you're exploring paths besides tagged deployment of a docker container (or @edsu can say if he'd like to claim this whole issue for now, to prevent duplicated effort)