Improve ChromeOS support

app/src/main/AndroidManifest.xml

@@ -7,6 +7,13 @@
   <!-- Enable after we target Android P -->
   <!--<uses-permission android:name="android.permission.FOREGROUND_SERVICE" />-->
 
+  <uses-feature
+    android:name="android.hardware.touchscreen"
+    android:required="false" />
+  <uses-feature
+    android:name="android.hardware.type.pc"
+    android:required="false" />
+
   <application
     android:name=".QuasselDroid"
     android:allowBackup="true"
@@ -16,6 +23,13 @@
     android:supportsRtl="true"
     android:theme="@style/Theme.SplashTheme">
 
+    <meta-data
+      android:name="WindowManagerPreference:FreeformWindowSize"
+      android:value="tablet" />
+    <meta-data
+      android:name="WindowManagerPreference:FreeformWindowOrientation"
+      android:value="landscape" />
+
     <!-- Normal Chat -->
     <activity
       android:name=".ui.chat.ChatActivity"