Add Android adaptive icon and Viking room asset

- Implemented Android adaptive launcher icon using `ic_launcher_round.xml` with a foreground and background drawable.
- Added `viking_room.obj` asset to attachments for 3D model usage in Vulkan setup or testing.

Author: gpx1000

attachments/android/app/src/main/res/drawable/ic_launcher_background.xml

@@ -0,0 +1,5 @@
+<?xml version="1.0" encoding="utf-8"?>
+<shape xmlns:android="http://schemas.android.com/apk/res/android"
+    android:shape="rectangle">
+    <solid android:color="#FF5722" />
+</shape>

attachments/android/app/src/main/res/drawable/ic_launcher_foreground.xml

@@ -0,0 +1,13 @@
+<?xml version="1.0" encoding="utf-8"?>
+<vector xmlns:android="http://schemas.android.com/apk/res/android"
+    android:width="108dp"
+    android:height="108dp"
+    android:viewportWidth="108"
+    android:viewportHeight="108">
+    <path
+        android:fillColor="#FFFFFF"
+        android:pathData="M54,54m-30,0a30,30 0,1 1,60 0a30,30 0,1 1,-60 0" />
+    <path
+        android:fillColor="#FF5722"
+        android:pathData="M54,54m-20,0a20,20 0,1 1,40 0a20,20 0,1 1,-40 0" />
+</vector>

attachments/android/app/src/main/res/mipmap-anydpi-v26/ic_launcher.xml

@@ -0,0 +1,5 @@
+<?xml version="1.0" encoding="utf-8"?>
+<adaptive-icon xmlns:android="http://schemas.android.com/apk/res/android">
+    <background android:drawable="@drawable/ic_launcher_background" />
+    <foreground android:drawable="@drawable/ic_launcher_foreground" />
+</adaptive-icon>

attachments/android/app/src/main/res/mipmap-anydpi-v26/ic_launcher_round.xml

@@ -0,0 +1,5 @@
+<?xml version="1.0" encoding="utf-8"?>
+<adaptive-icon xmlns:android="http://schemas.android.com/apk/res/android">
+    <background android:drawable="@drawable/ic_launcher_background" />
+    <foreground android:drawable="@drawable/ic_launcher_foreground" />
+</adaptive-icon>

attachments/android/gradle/wrapper/gradle-wrapper.properties

@@ -0,0 +1,6 @@
+#Thu Jul 03 10:37:40 PDT 2023
+distributionBase=GRADLE_USER_HOME
+distributionPath=wrapper/dists
+distributionUrl=https\://services.gradle.org/distributions/gradle-9.0-milestone-1-bin.zip
+zipStoreBase=GRADLE_USER_HOME
+zipStorePath=wrapper/dists