Add mock settings pages to terminal app

This commit adds three settings pages to the terminal app:
1. Disk Resize
2. Port Forwarding
3. Recovery

To enable the adaptive layout for mobile and large screen devices for
these settings pages, this commit introduces activity embedding layout.

Bug: 364149286
Test: install on tangorpro and komodo
Change-Id: Iccbd1578b0d729e7e295d0533e4db54c6fd1d815
diff --git a/android/TerminalApp/AndroidManifest.xml b/android/TerminalApp/AndroidManifest.xml
index e338c49..f09412e 100644
--- a/android/TerminalApp/AndroidManifest.xml
+++ b/android/TerminalApp/AndroidManifest.xml
@@ -1,6 +1,7 @@
 <?xml version="1.0" encoding="utf-8"?>
 <manifest xmlns:android="http://schemas.android.com/apk/res/android"
-    package="com.android.virtualization.terminal" >
+    xmlns:tools="http://schemas.android.com/tools"
+    package="com.android.virtualization.terminal">
 
     <uses-permission android:name="android.permission.MANAGE_VIRTUAL_MACHINE" />
     <uses-permission android:name="android.permission.USE_CUSTOM_VIRTUAL_MACHINE" />
@@ -9,9 +10,11 @@
     <uses-permission android:name="android.permission.FOREGROUND_SERVICE_SPECIAL_USE"/>
 
     <uses-feature android:name="android.software.virtualization_framework" android:required="true" />
+
     <application
 	android:label="@string/app_name"
         android:icon="@mipmap/ic_launcher"
+        android:theme="@style/Theme.Material3.DayNight.NoActionBar"
         android:usesCleartextTraffic="true">
         <activity android:name=".MainActivity"
                   android:configChanges="orientation|screenSize|keyboard|keyboardHidden|navigation|uiMode|screenLayout|smallestScreenSize"
@@ -21,6 +24,26 @@
                 <category android:name="android.intent.category.DEFAULT" />
             </intent-filter>
         </activity>
+        <activity android:name=".SettingsActivity">
+        </activity>
+        <activity android:name=".SettingsDiskResizeActivity">
+        </activity>
+        <activity android:name=".SettingsPortForwardingActivity">
+        </activity>
+        <activity android:name=".SettingsRecoveryActivity">
+        </activity>
+        <property
+            android:name="android.window.PROPERTY_ACTIVITY_EMBEDDING_SPLITS_ENABLED"
+            android:value="true" />
+        <provider
+            android:name="androidx.startup.InitializationProvider"
+            android:authorities="${applicationId}.androidx-startup"
+            android:exported="false"
+            tools:node="merge">
+            <meta-data
+                android:name="${applicationId}.SplitInitializer"
+                android:value="androidx.startup" />
+        </provider>
         <activity-alias
             android:name=".MainActivityAlias"
             android:targetActivity="com.android.virtualization.terminal.MainActivity"