Added some extra permissions and features likely to be used by SDL applications

android-project/app/src/main/AndroidManifest.xml

@@ -17,17 +17,31 @@
         android:required="false" />
 
     <!-- Game controller support -->
+    <uses-feature
+        android:name="android.hardware.bluetooth"
+        android:required="false" />
     <uses-feature
         android:name="android.hardware.gamepad"
         android:required="false" />
+    <uses-feature
+        android:name="android.hardware.usb.host"
+        android:required="false" />
 
     <!-- External mouse input events -->
     <uses-feature
         android:name="android.hardware.type.pc"
         android:required="false" />
 
+    <!-- Audio recording support -->
+    <!-- if you want to capture audio, uncomment this. -->
+    <!-- <uses-feature
+        android:name="android.hardware.microphone"
+        android:required="false" /> -->
+
     <!-- Allow writing to external storage -->
     <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />
+    <!-- Allow access to Bluetooth devices -->
+    <uses-permission android:name="android.permission.BLUETOOTH" />
     <!-- Allow access to the vibrator -->
     <uses-permission android:name="android.permission.VIBRATE" />