add phone functions

samples/dialer-sample.lua

@@ -0,0 +1,11 @@
+function on_resume()
+    ui:show_lines({ "Make call 123", "Send SMS 123" })
+end
+
+function on_click(idx)
+    if idx == 1 then
+        phone:make_call("123")
+    else
+        phone:send_sms("123", "Test")
+    end
+end