feat: Add some branding

android/app/build.gradle

@@ -24,7 +24,7 @@ if (flutterVersionName == null) {
 }
 
 android {
-    namespace = "com.example.firewallet"
+    namespace = "au.firewallet"
     compileSdk = flutter.compileSdkVersion
     ndkVersion = flutter.ndkVersion
 
@@ -35,7 +35,7 @@ android {
 
     defaultConfig {
         // TODO: Specify your own unique Application ID (https://developer.android.com/studio/build/application-id.html).
-        applicationId = "com.example.firewallet"
+        applicationId = "au.firewallet"
         // You can update the following values to match your application needs.
         // For more information, see: https://docs.flutter.dev/deployment/android#reviewing-the-gradle-build-configuration.
         minSdk = flutter.minSdkVersion

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

@@ -1,4 +1,4 @@
-package com.example.firewallet
+package au.firewallet
 
 import io.flutter.embedding.android.FlutterActivity