feat(mobile): jxl decoder (#32592)

native/native_core/test/native_core_test.dart

@@ -0,0 +1,8 @@
+import 'package:flutter_test/flutter_test.dart';
+import 'package:native_core/native_core.dart';
+
+void main() {
+  test('loads the core and returns its version', () {
+    expect(version(), isNotEmpty);
+  });
+}