add output when creating webhooks with the CLI (#10139)

* add output when creating webhooks with the CLI

* update per feedback

* update per feedback

cmd/mattermost/commands/webhook.go

@@ -156,10 +156,14 @@ func createIncomingWebhookCmdF(command *cobra.Command, args []string) error {
 		ChannelLocked: channelLocked,
 	}
 
-	if _, err := app.CreateIncomingWebhookForChannel(user.Id, channel, incomingWebhook); err != nil {
+	createdIncoming, errIncomingWebhook := app.CreateIncomingWebhookForChannel(user.Id, channel, incomingWebhook)
-		return err
+	if errIncomingWebhook != nil {
+		return errIncomingWebhook
 	}
 
+	CommandPrettyPrintln("Id: " + createdIncoming.Id)
+	CommandPrettyPrintln("Display Name: " + createdIncoming.DisplayName)
+
 	return nil
 }
 
@@ -287,10 +291,14 @@ func createOutgoingWebhookCmdF(command *cobra.Command, args []string) error {
 		}
 	}
 
-	if _, err := app.CreateOutgoingWebhook(outgoingWebhook); err != nil {
+	createdOutgoing, errOutgoing := app.CreateOutgoingWebhook(outgoingWebhook)
-		return err
+	if errOutgoing != nil {
+		return errOutgoing
 	}
 
+	CommandPrettyPrintln("Id: " + createdOutgoing.Id)
+	CommandPrettyPrintln("Display Name: " + createdOutgoing.DisplayName)
+
 	return nil
 }