Refactor application package structure and update Firebase iOS bundle IDs for different environments.

android/app/src/main/AndroidManifest.xml

@@ -14,7 +14,7 @@
         android:icon="@mipmap/ic_launcher"
         android:allowBackup="false">
         <activity
-            android:name="com.example.syncrow_app.MainActivity"
+            android:name="com.syncrow.mobile.MainActivity"
             android:exported="true"
             android:launchMode="singleTop"
             android:theme="@style/LaunchTheme"

android/app/src/main/kotlin/com/example/syncrow_app/MainActivity.kt

@@ -1,4 +1,4 @@
-package com.example.syncrow_application
+package com.syncrow.mobile
 
 import io.flutter.embedding.android.FlutterActivity