Manifest: make wireguard compatible with android TV

As of now wireguard is not listed in Android TV play store
due to the lack of CATEGORY_LEANBACK_LAUNCHER [1].
Even the app is not listed when we sideload into TV device[2].

[1]: https://developer.android.com/reference/android/content/Intent.html#CATEGORY_LEANBACK_LAUNCHER
[2]: https://developer.android.com/training/tv/start/start.html#tv-activity

Signed-off-by: Revath S Kumar <rsk@revathskumar.com>
Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>

app/src/main/AndroidManifest.xml

@@ -16,6 +16,8 @@
         android:label="@string/permission_label"
         android:protectionLevel="dangerous" />
 
+    <uses-feature android:name="android.hardware.touchscreen" android:required="false"/>
+
     <application
         android:name=".Application"
         android:allowBackup="false"
@@ -31,6 +33,7 @@
             <intent-filter>
                 <action android:name="android.intent.action.MAIN" />
                 <category android:name="android.intent.category.LAUNCHER" />
+                <category android:name="android.intent.category.LEANBACK_LAUNCHER" />
             </intent-filter>
 
             <intent-filter>