Add unofficial intent for WifiTetherSettings

This CL adds an intent that can be used to start
WifiTether Settings.

Test: SettingsGatewayTest still passes
Bug: 110235497
Bug: 80251951
Change-Id: Iac94e563a91b1f821f69f18234d8176350ae5f29
diff --git a/AndroidManifest.xml b/AndroidManifest.xml
index 2713216..fb74bf9 100644
--- a/AndroidManifest.xml
+++ b/AndroidManifest.xml
@@ -467,6 +467,20 @@
                 android:value="com.android.settings.TetherSettings" />
         </activity>
 
+        <activity
+            android:name="Settings$WifiTetherSettingsActivity"
+            android:label="@string/wifi_hotspot_checkbox_text"
+            android:icon="@drawable/ic_wifi_tethering"
+            android:parentActivityName="Settings">
+            <intent-filter>
+                <action android:name="com.android.settings.WIFI_TETHER_SETTINGS" />
+                <category android:name="android.intent.category.DEFAULT" />
+            </intent-filter>
+            <meta-data android:name="com.android.settings.FRAGMENT_CLASS"
+                android:value="com.android.settings.wifi.tether.WifiTetherSettings" />
+        </activity>
+
+
         <!-- Keep compatibility with old shortcuts. -->
         <activity-alias android:name=".TetherSettings"
                   android:label="@string/tether_settings_title_all"