chore: add kotlin-parcelize plugin to build.gradle for improved parceling support

android/app/build.gradle

@@ -4,6 +4,7 @@ plugins {
     id 'com.google.gms.google-services'
     // END: FlutterFire Configuration
     id "kotlin-android"
+    id "kotlin-parcelize"
     id "dev.flutter.flutter-gradle-plugin"
     id 'com.huawei.agconnect'
 }