[ECS] [Fargate]: Free container logs up to a certain limit

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**Tell us about your request**
I want to get a recent stream of standard output logs from my container on ECS or Fargate. This should be possible through a client of my choice preferably through CLI. Something similar to _kubectl get logs_ or perhaps another command like _aws ecs get-logs_

**Which service(s) is this request for?**
ECS, Fargate

**Tell us about the problem you're trying to solve. What are you trying to do, and why is it hard?**
I want to test that my application is working as expected right after deploying it by viewing recent container logs in an easy fashion for free. I don't need to have to configure monitoring agents or log drivers and see the logs in CloudWatch or elsewhere. I cannot access hosts on EC2 to retrieve the logs directly from docker either and of course it's not possible on Fargate.

The issue names ECS and Fargate but provides no repository files, tests, or entry points. Start by reviewing the repository's roadmap contribution guidance and the existing ECS/Fargate logging documentation; done requires a defined, bounded way to retrieve recent container standard-output logs without extra monitoring configuration.

Written by the indexing model from the issue text.