v1.7.11 — Angular constructor DI parsing

Added

• Constructor and field dependency injection parsing for TypeScript/Angular classes
• New 'injects' edge kind — get_dependencies now shows Angular service dependencies
• constructor(private svc: FooService) now creates an edge from the class to FooService
• extends/implements targets now resolve through imports instead of assuming local symbols
• External/library types (HttpClient, OnInit etc.) resolve to external:: markers and are excluded