chore: Add open conversation option (#11828)

Added conversation_status, assignee_id, team_id, and priority to the
message_created event to allow users to build automations based on
conversation details. Also introduced a new open_conversation action.

---------

Co-authored-by: Muhsin Keloth <muhsinkeramam@gmail.com>

app/services/action_service.rb

@@ -18,6 +18,10 @@ class ActionService
     @conversation.resolved!
   end
 
+  def open_conversation(_params)
+    @conversation.open!
+  end
+
   def change_status(status)
     @conversation.update!(status: status[0])
   end