v1.5.0 of native_workmanager_gen

Code generator for native_workmanager. Generates type-safe DartWorker callback IDs and worker registry from @WorkerCallback annotations. Changelog excerpt: - Version bump synchronized with `native_workmanager`1.5.0 (`taskId`-scoped progress filter for iOS Live Activities, SwiftUI `@main`setup detection, kmpworkmanager 3.3.1 upgrade, Pub score 160/160 fix). No codegen changes. ---