Android TV (#933)

* Disable touchscreen requirement

* Add Android TV feature

* Add Android TV draft banner

* Add Android TV check method

client/android/AndroidManifest.xml

@@ -11,6 +11,9 @@
     <uses-feature android:name="android.hardware.camera" android:required="false" />
     <uses-feature android:name="android.hardware.camera.any" android:required="false" />
     <uses-feature android:name="android.hardware.camera.autofocus" android:required="false" />
+    <!-- for TV -->
+    <uses-feature android:name="android.software.leanback" android:required="false" />
+    <uses-feature android:name="android.hardware.touchscreen" android:required="false" />
 
     <!-- The following comment will be replaced upon deployment with default features based on the dependencies
     of the application. Remove the comment if you do not require these default features. -->
@@ -31,6 +34,7 @@
         android:label="-- %%INSERT_APP_NAME%% --"
         android:icon="@mipmap/icon"
         android:roundIcon="@mipmap/icon_round"
+        android:banner="@mipmap/ic_banner"
         android:theme="@style/NoActionBar"
         android:fullBackupContent="@xml/backup_content"
         android:dataExtractionRules="@xml/data_extraction_rules"
@@ -47,6 +51,7 @@
             <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>

client/android/res/mipmap-anydpi-v26/ic_banner.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="@color/ic_banner_background"/>
+    <foreground android:drawable="@mipmap/ic_banner_foreground"/>
+</adaptive-icon>

client/android/res/values/ic_banner_background.xml

@@ -0,0 +1,4 @@
+<?xml version="1.0" encoding="utf-8"?>
+<resources>
+    <color name="ic_banner_background">#1E1E1F</color>
+</resources>

client/android/src/org/amnezia/vpn/AmneziaActivity.kt

@@ -1,6 +1,7 @@
 package org.amnezia.vpn
 
 import android.Manifest
+import android.annotation.SuppressLint
 import android.app.AlertDialog
 import android.app.NotificationManager
 import android.content.BroadcastReceiver
@@ -556,8 +557,12 @@ class AmneziaActivity : QtActivity() {
     }
 
     @Suppress("unused")
+    @SuppressLint("UnsupportedChromeOsCameraSystemFeature")
     fun isCameraPresent(): Boolean = applicationContext.packageManager.hasSystemFeature(PackageManager.FEATURE_CAMERA)
 
+    @Suppress("unused")
+    fun isOnTv(): Boolean = applicationContext.packageManager.hasSystemFeature(PackageManager.FEATURE_LEANBACK)
+
     @Suppress("unused")
     fun startQrCodeReader() {
         Log.v(TAG, "Start camera")