[request]: Add support for Kinesis Subscribe to Shard

[rcoh]

Community Note

• Please vote on this issue by adding a 👍 reaction to the original issue to help the community and maintainers prioritize this request
• Please do not leave "+1" or "me too" comments, they generate extra noise for issue followers and do not help prioritize the request
• If you are interested in working on this issue, please leave a comment

Tell us about your request Add support for https://docs.aws.amazon.com/kinesis/latest/APIReference/API_SubscribeToShard.html

Tell us about the problem you're trying to solve. What are you trying to do, and why is it hard? What outcome are you trying to achieve, ultimately, and why is it hard/impossible to do right now? What is the impact of not having this problem solved? The more details you can provide, the better we'll be able to understand and solve the problem. Requires support for RPC event streams

Are you currently working around this issue? How are you currently solving this problem?

Additional context Anything else we should know?

Attachments If you think you might have additional information that you'd like to include via an attachment, please do - we'll take a look. (Remember to remove any personally-identifiable information.)

[rcoh]

potential thing to test separately: https://github.com/rusoto/rusoto/issues/1963