Add PackageName.qualify

[jingibus]

No description provided.

[swankjesse]

I didn’t think local is actually a part of the WIT language, just a part of the examples?
https://github.com/WebAssembly/component-model/blob/main/design/mvp/WIT.md

I was under the impression that local packages are more like inline packages, and our processing code should promote them to be peers with the TopLevelPackage type. As a result, parsing a single directory of .wit files could produce a List<IoTopLevelWitPackage>

(But I’m not sure I’m reading the same docs as you, or if I’m reading 'em right!

[jingibus]

It's not part of the grammar, but it's implied that local is elided when translating to the fully qualified package name?

Maybe I need to check the reference implementation? This wonderfully friendly interaction left me with the definite impression that there's only one implementation, and so the spec might be incomplete by itself

[jingibus]

Turns out my assumption was completely wrong here. There's no hierarchical relationship implied with the package a subpackage lives in: it's just a wholly distinct package defined within the context of another package

So this is entirely unnecessary