update action cable for order resservation

app/channels/order_reservation_channel.rb

@@ -0,0 +1,10 @@
+class OrderReservationChannel < ApplicationCable::Channel
+  def subscribed
+    stream_from "order_reservation_channel"
+  end
+
+  def unsubscribed
+    stop_all_streams
+    # Any cleanup needed when channel is unsubscribed
+  end
+end