[ECS] ECS Development in IntelliJ, PyCharm, and Visual Studio Code

[cbbarclay]

Be able to create, test, and deploy an ECS application in the IDE. Create a new application that includes source code, Dockerfile, and a CloudFormation template that defines your application's resources including an ECS task definition and ECS service. Test your application in the IDE’s debugger with AWS cloud dependencies like a container credentials endpoint, a task metadata endpoint, and task definition attributes like environment variables and secrets. Deploy your application directly through the IDE or with a continuous delivery pipeline.