callwaiting: Support CDMA call waiting

Implement the CDMA call waiting setting menu
considering CDMA VoLTE. (UT and CDMA case)
Menu doesn't show status of call waiting if UT is not supported.
So SwitchPreference is not used.
When set call waiting, if call waiting doesn't work over UT,
dial will be triggered.

Bug: 146531989

Change-Id: I805319d93a732a8f24ac7411493259be3b3d3ee6
Signed-off-by: Jang Hayeong <[email protected]>
Signed-off-by: Sungjae <[email protected]>
diff --git a/res/values/strings.xml b/res/values/strings.xml
index a19f3df..b74b2ff 100644
--- a/res/values/strings.xml
+++ b/res/values/strings.xml
@@ -275,6 +275,14 @@
     <string name="disable_cfnrc_forbidden">Your carrier doesn\'t support disabling call forwarding when your phone is unreachable.</string>
     <string name="registration_cf_forbidden">Your carrier doesn\'t support call forwarding.</string>
 
+    <!-- Cdma Call waiting settings screen, setting option name -->
+    <string name="cdma_call_waiting">Turn on call waiting?</string>
+    <string name="enable_cdma_call_waiting_setting">During a call, you\'ll be notified about incoming calls</string>
+    <string name="enable_cdma_cw">Turn on</string>
+    <string name="disable_cdma_cw">Cancel</string>
+    <string name="cdma_call_waiting_in_ims_on">CDMA Call Waiting under IMS On</string>
+    <string name="cdma_call_waiting_in_ims_off">CDMA Call Waiting under IMS Off</string>
+
     <!-- Title of the progress dialog displayed while updating Call settings -->
     <string name="updating_title">Call settings</string>
     <!-- Toast in Call settings when asked to launch settings for a secondary user -->
@@ -2154,5 +2162,4 @@
     <string name="carrier_provisioning">Carrier Provisioning Info</string>
     <!-- Trigger Carrier Provisioning [CHAR LIMIT=NONE] -->
     <string name="trigger_carrier_provisioning">Trigger Carrier Provisioning</string>
-
 </resources>