Decorator command set types and validation

[sstone1]

Feature Request 🛍️

Provide APIs that allow a user to validate a decorator command set, and TypeScript types that allow a user to process a decorator command set.

Use Case

Make it easier to work with decorator command sets in consuming applications.

Possible Solution

Embed the decorator command set model into Concerto as per the metamodel, and expose it in a similar way.

Context

Trying to use decorator command sets is harder than it needs to be. The types are currently published to the Accord Project models website, which is separate from the Concerto APIs. Usage of decorator command sets is part of the Concerto APIs, so IMO validation and types should also be present in the Concerto APIs.

Detailed Description