Separate "Keyboard" from "Language & input"

1. Separate "Keyboard" from "Language & input".
2. Use FeatureFlagUtils.SETTINGS_NEW_KEYBOARD_UI to control the
   different UI until Settings launches the new UI design.

Bug: 242680328
Test: local test
Change-Id: Id1ea6d3e3c2e6b83bc4b4d835c6b27e31311c530
diff --git a/AndroidManifest.xml b/AndroidManifest.xml
index cf93f9b..3581d48 100644
--- a/AndroidManifest.xml
+++ b/AndroidManifest.xml
@@ -909,6 +909,46 @@
                        android:value="true"/>
         </activity>
 
+        <activity
+            android:name=".Settings$LanguageSettingsActivity"
+            android:label="@string/languages_settings"
+            android:exported="true"
+            android:icon="@drawable/ic_settings_languages">
+            <intent-filter>
+                <action android:name="android.settings.LANGUAGE_SETTINGS"/>
+                <category android:name="android.intent.category.DEFAULT"/>
+            </intent-filter>
+            <intent-filter>
+                <action android:name="android.intent.action.MAIN"/>
+                <category android:name="android.intent.category.VOICE_LAUNCH"/>
+                <category android:name="android.intent.category.DEFAULT"/>
+            </intent-filter>
+            <meta-data android:name="com.android.settings.FRAGMENT_CLASS"
+                       android:value="com.android.settings.language.LanguageSettings"/>
+            <meta-data android:name="com.android.settings.HIGHLIGHT_MENU_KEY"
+                       android:value="@string/menu_key_system"/>
+            <meta-data android:name="com.android.settings.PRIMARY_PROFILE_CONTROLLED"
+                       android:value="true"/>
+        </activity>
+
+        <activity
+            android:name=".Settings$KeyboardSettingsActivity"
+            android:label="@string/keyboard_settings"
+            android:exported="true"
+            android:icon="@drawable/ic_settings_language">
+            <intent-filter>
+                <action android:name="android.intent.action.MAIN"/>
+                <category android:name="android.intent.category.VOICE_LAUNCH"/>
+                <category android:name="android.intent.category.DEFAULT"/>
+            </intent-filter>
+            <meta-data android:name="com.android.settings.FRAGMENT_CLASS"
+                       android:value="com.android.settings.inputmethod.KeyboardSettings"/>
+            <meta-data android:name="com.android.settings.HIGHLIGHT_MENU_KEY"
+                       android:value="@string/menu_key_system"/>
+            <meta-data android:name="com.android.settings.PRIMARY_PROFILE_CONTROLLED"
+                       android:value="true"/>
+        </activity>
+
         <activity android:name="Settings$AvailableVirtualKeyboardActivity"
             android:exported="true"
             android:label="@string/available_virtual_keyboard_category">