WIP notifications and other refactors (#88)

* WIP notifications and other refactors
- refactor notification channels
- send notifications on events related to the servers and sites
- delete server log files on server deletion
- add telegram notification channel
- add new icons
- cache configs and icons on installation and updates
- new navbar for dark mode and settings

* discord channel

* build assets

* pint

app/NotificationChannels/AbstractNotificationChannel.php

@@ -0,0 +1,13 @@
+<?php
+
+namespace App\NotificationChannels;
+
+use App\Contracts\NotificationChannel as NotificationChannelInterface;
+use App\Models\NotificationChannel;
+
+abstract class AbstractNotificationChannel implements NotificationChannelInterface
+{
+    public function __construct(protected NotificationChannel $notificationChannel)
+    {
+    }
+}