Run the "add to ECS" workflow until we complete or get an error.

'postman-insights-agent ecs' should default to 'postman-insights-agent ecs add'.

Error indicating profile is absent.

Error indicating the user was unauthorized.

Interface of the Paginator returned by the ECS package.

A function which executes the next part of the workflow, and picks a next state (Some) or exits (None), or signals an eror.