Add settings page for notification channel groups

Bug: 63927402
Test: tests/unit/src/com/android/settings/notification/.*
Change-Id: Iebf7d8ba54f0cf5801a42f3161354d3cc5e5c848
diff --git a/AndroidManifest.xml b/AndroidManifest.xml
index e3decb0..7702257 100644
--- a/AndroidManifest.xml
+++ b/AndroidManifest.xml
@@ -2700,6 +2700,22 @@
                 android:value="com.android.settings.notification.AppNotificationSettings" />
         </activity>
 
+        <!-- Show channel group-level notification settings (group passed in as extras) -->
+        <activity android:name="Settings$ChannelGroupNotificationSettingsActivity"
+                  android:exported="true">
+            <intent-filter android:priority="1">
+                <action android:name="android.settings.CHANNEL_GROUP_NOTIFICATION_SETTINGS" />
+                <category android:name="android.intent.category.DEFAULT" />
+            </intent-filter>
+            <intent-filter>
+                <action android:name="android.intent.action.MAIN" />
+                <category android:name="android.intent.category.DEFAULT" />
+            </intent-filter>
+            <meta-data android:name="com.android.settings.FRAGMENT_CLASS"
+                       android:value="com.android.settings.notification.ChannelGroupNotificationSettings" />
+        </activity>
+
+
         <!-- Show channel-level notification settings (channel passed in as extras) -->
         <activity android:name="Settings$ChannelNotificationSettingsActivity"
                   android:exported="true">