feat(android): add plugin registration and test app integration

- Add capacitor.plugins.json for main plugin registration
- Add plugin dependency to test app build configuration
- Add local plugin dependency to test app package.json
- Update package-lock.json with plugin dependency resolution

Enables proper plugin discovery and integration in test environment.

android/src/main/assets/capacitor.plugins.json

@@ -0,0 +1,8 @@
+[
+    {
+      "pkg": "@timesafari/daily-notification-plugin",
+      "name": "DailyNotification",
+      "classpath": "com.timesafari.dailynotification.DailyNotificationPlugin"
+    }
+  ]
+