Feature: Add ability to set stack description

[TomDufall]

Cloudformation stacks have a description field. This should be setable through the CDK.
There is currently no documented way to set it.

Use Case

Descriptions provide a more human-friendly form of documentation. In my case, I have stacks in a shared environment and I'd like it to be clear to others what they are and who they belong to.

Proposed Solution

A 'description' stack property would fulfill this requirement.

Other

Description field as viewed in the console:

Current documentation - no description property: https://docs.aws.amazon.com/cdk/api/latest/docs/@aws-cdk_core.Stack.html

• 👋 I may be able to implement this feature request
• ⚠️ This feature might incur a breaking change

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This is a 🚀 Feature Request

[NGL321]

Hey @tom98784,

Thank you for submitting this request! This seems totally reasonable, and not too difficult to implement.

If you would like to submit a PR one of us will review it, otherwise someone will update this issue when there is further information!

[nmussy]

From what I can see, the change set description isn't set when calling createChangeSet (there's a Description field there too), but in the template body.

The most appropriate I can see to implement this feature would be in CdkToolkit.deploy.

@tom98784 Tell me if you'd like to give it a shot, otherwise I'd be happy to make a PR.

[TomDufall]

@nmussy I've never done any TS so I'm not that confident, but it's a relatively straightforward change so I'll give it a go. If I've got nowhere in a few days/end up not having time to do it, I'll let you know.