Automatic cleanup of resource on Stack removal from organization.yml

[dschofie]

Currently, we encourage users when they want to clean up to:

1. remove resources tracked in a Telophase Stack
2. apply telophase for the empty Stack
3. Stop tracking the Stack in organization.yml

We should support removing a Stack from the organization.yml and having the resources be automatically cleaned up on deploy.

Alternatively, we could follow the same proposed pattern with Accounts. With Accounts, we plan to set Delete: true so that the resource needs to be explicitly cleaned up by telohasecli.