[Smart Forwarding] Enable configuration UI in call setting

Enables configuration UI entry in call setting

Bug: b/127693686
Test: Add fake code locally, and see if
  (1) UI entry appears only when primary SIM support this feature
  (2) Get into UI when click from call UI setting
  (3) Enable/disable setting of feature

Change-Id: I30a1a1db1c74601eed5b27bfbeaeb47949a5a83f
diff --git a/res/values/strings.xml b/res/values/strings.xml
index 8e7d087..f15138e 100644
--- a/res/values/strings.xml
+++ b/res/values/strings.xml
@@ -175,6 +175,13 @@
     <!-- DO NOT TRANSLATE. Internal key for a voicemail notification preference. -->
     <string name="voicemail_notifications_key" translatable="false">voicemail_notification_key</string>
 
+    <!-- Title for Make and receive calls category. -->
+    <string name="make_and_receive_calls">Make &amp; receive calls</string>
+    <!-- Title for the button to launch smart forwarding which will configure call forwarding on both SIMs to forward the call to the other SIM number when its not reachable. -->
+    <string name="smart_forwarding_settings_menu">Smart Forwarding</string>
+    <!-- Description of smart forwarding setting. -->
+    <string name="smart_forwarding_settings_menu_summary">When one number isn\'t reachable, always forward calls to your other number</string>
+
     <!-- Voicemail notifications title. The user clicks on this preference navigate to the system settings screen for that channel
     .[CHAR LIMIT=30] -->
     <string name="voicemail_notifications_preference_title">Notifications</string>