Drop support for wildcard imports

[dselman]

Feature Request 🛍️

Concerto metamodel currently allows the user to import all types from a namespace:

import org.acme.*

Use Case

Wild card imports are risky as a new type can be introduced in the imported namespace that has a name collision with a type in the importing namespace.

Possible Solution

Drop support for wildcard imports.

Context

Makes it difficult to build a static dependency graph of namespaces and imported types.

Detailed Description

Efficient import resolution, at scale.

[sstone1]

@dselman could we use the versionedNamespacesStrict: true flag for this, so that when versioning is enabled then you cannot use wildcard imports? Then we could drop it altogether when we make versionedNamespacesStrict: true the default, which I would think might be a Concerto v3 item.