Adding slow pump detection to web_conn and better metrics (#6114)

* Adding slow pump detection to web_conn and better metrics

* Fixing bad merge

* Fixing typo

model/websocket_message.go

@@ -34,6 +34,7 @@ const (
 	WEBSOCKET_AUTHENTICATION_CHALLENGE  = "authentication_challenge"
 	WEBSOCKET_EVENT_REACTION_ADDED      = "reaction_added"
 	WEBSOCKET_EVENT_REACTION_REMOVED    = "reaction_removed"
+	WEBSOCKET_EVENT_RESPONSE            = "response"
 )
 
 type WebSocketMessage interface {
@@ -117,7 +118,7 @@ func (o *WebSocketResponse) IsValid() bool {
 }
 
 func (o *WebSocketResponse) EventType() string {
-	return ""
+	return WEBSOCKET_EVENT_RESPONSE
 }
 
 func (o *WebSocketResponse) ToJson() string {