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/Notifications/AbstractNotification.php

@@ -0,0 +1,36 @@
+<?php
+
+namespace App\Notifications;
+
+use App\Contracts\Notification as NotificationInterface;
+use Illuminate\Bus\Queueable;
+use Illuminate\Contracts\Queue\ShouldQueue;
+use Illuminate\Notifications\Messages\MailMessage;
+use Illuminate\Notifications\Notification;
+use Illuminate\Queue\SerializesModels;
+
+abstract class AbstractNotification extends Notification implements NotificationInterface, ShouldQueue
+{
+    use Queueable, SerializesModels;
+
+    public function toMail(object $notifiable): MailMessage
+    {
+        return (new MailMessage())
+            ->line($this->rawText());
+    }
+
+    public function toSlack(object $notifiable): string
+    {
+        return $this->rawText();
+    }
+
+    public function toDiscord(object $notifiable): string
+    {
+        return $this->rawText();
+    }
+
+    public function toTelegram(object $notifiable): string
+    {
+        return $this->rawText();
+    }
+}