fix: rename state incoming to searching

The first call state received when a call is placed  was named INCOMING and now is SEARCHING

Change-Id: Iaf33f514bfff209612f5a6ec07205762471a9dd2
diff --git a/ring-android/app/src/main/res/values/strings_call.xml b/ring-android/app/src/main/res/values/strings_call.xml
index 73b0225..49d4d86 100644
--- a/ring-android/app/src/main/res/values/strings_call.xml
+++ b/ring-android/app/src/main/res/values/strings_call.xml
@@ -22,6 +22,7 @@
 -->
 <resources>
     <!-- SipCalls -->
+    <string name="call_human_state_searching">Searching</string>
     <string name="call_human_state_incoming">Incoming</string>
     <string name="call_human_state_connecting">Connecting</string>
     <string name="call_human_state_ringing">Ringing</string>