Ability to constrain selectable blueprints based on requirements

[agdimech]

Describe your feature request

I have a Blueprint annotated with the @requires jsdoc. It would be amazing to generate a DAG based on these and only render selectable blueprints in the UI.

Describe the solution you'd like

• A user annotates their blueprint with @requires and specifies 'my-blueprint' as the value.
• In the UI, if a user is creating a new project - all @requires blueprints should not be selectable as they require a blueprint to already be deployed.
• in the UI, if a user is adding a blueprint to an existing project, only blueprints which satisfy the @requires should be selectable.

Describe alternatives you've considered

• Throw an error at synth time (this is not a great UX).

Additional context

N/A