update call waiter

app/channels/call_waiter_channel.rb

@@ -0,0 +1,14 @@
+class CallWaiterChannel < ApplicationCable::Channel
+  def subscribed
+    stream_from "call_waiter_channel"
+  end
+
+  def unsubscribed
+    stop_all_streams
+    # Any cleanup needed when channel is unsubscribed
+  end
+
+  def order(message)
+    # ToDo
+  end
+end