Add Vulkan 1.1 feature manifest.

app/src/main/AndroidManifest.xml

@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<manifest
+<manifest xmlns:tools="http://schemas.android.com/tools"
     xmlns:android="http://schemas.android.com/apk/res/android">
 
     <uses-permission android:name="android.permission.INTERNET" />
@@ -9,6 +9,8 @@
 
     <!-- OpenGL ES 2.0 -->
     <uses-feature android:glEsVersion="0x00020000" />
+    <!-- Vulkan 1.1 -->
+    <uses-feature android:name="android.hardware.vulkan.version" android:version="0x401000" android:required="false" tools:targetApi="n" />
     <!-- Touchscreen support -->
     <uses-feature android:name="android.hardware.touchscreen" android:required="false" />
     <!-- Game controller support -->