BridgeJS: Fix nested type resolution for MemberTypeSyntax (e.g., Networking.API.Method)

[krodak]

Issue

Currently for functions that would be using nested types like:

@JS func echoNetworkingAPIMethod(_ method: Networking.API.Method) -> Networking.API.Method { … }

We'd get following error:

error: Unsupported type: Networking.API.Method
Hint: Only primitive types and types defined in the same module are allowed

Issue is that currently lookupType(for only handles IdentifierTypeSyntax, hence MemberTypeSyntax like Networking.API.Method would not be resolved to a valid declaration.

Fix

Centralized type resolution in TypeDeclResolver with a new resolve(_: TypeSyntax) API and used it in ExportSwift to map nested enums/classes/actors to BridgeType. This should help with nested types resolution, while exported ABI remains unchanged for already-supported types.
New tests were added to prelude.mjs to confirm the fix.

[kateinoigakukun]

Thanks!