implemented event package addons with filament resource, event-admin purchase path and notifications, showing up in purchase history

app/Models/PackageAddon.php

@@ -0,0 +1,44 @@
+<?php
+
+namespace App\Models;
+
+use Illuminate\Database\Eloquent\Casts\Attribute;
+use Illuminate\Database\Eloquent\Factories\HasFactory;
+use Illuminate\Database\Eloquent\Model;
+
+class PackageAddon extends Model
+{
+    use HasFactory;
+
+    protected $fillable = [
+        'key',
+        'label',
+        'price_id',
+        'extra_photos',
+        'extra_guests',
+        'extra_gallery_days',
+        'active',
+        'sort',
+        'metadata',
+    ];
+
+    protected $casts = [
+        'active' => 'boolean',
+        'metadata' => 'array',
+        'extra_photos' => 'integer',
+        'extra_guests' => 'integer',
+        'extra_gallery_days' => 'integer',
+        'sort' => 'integer',
+    ];
+
+    protected function increments(): Attribute
+    {
+        return Attribute::make(
+            get: fn () => [
+                'extra_photos' => (int) ($this->extra_photos ?? 0),
+                'extra_guests' => (int) ($this->extra_guests ?? 0),
+                'extra_gallery_days' => (int) ($this->extra_gallery_days ?? 0),
+            ],
+        );
+    }
+}