feat(notifications): add Mattermost icon to notifications display

- Integrated MattermostIcon into the ShowNotifications component to support Mattermost notification type.
- Enhanced the user interface to visually represent Mattermost notifications alongside existing notification types.

apps/dokploy/components/dashboard/settings/notifications/show-notifications.tsx

@@ -4,6 +4,7 @@ import {
 	DiscordIcon,
 	GotifyIcon,
 	LarkIcon,
+	MattermostIcon,
 	NtfyIcon,
 	ResendIcon,
 	SlackIcon,
@@ -121,6 +122,11 @@ export const ShowNotifications = () => {
 																	<TeamsIcon className="size-7 text-muted-foreground" />
 																</div>
 															)}
+															{notification.notificationType === "mattermost" && (
+																<div className="flex  items-center justify-center rounded-lg">
+																	<MattermostIcon className="size-7" />
+																</div>
+															)}
 
 															{notification.name}
 														</span>