feat: add guest notification center

app/Models/Event.php

@@ -121,6 +121,11 @@ class Event extends Model
         return $this->hasMany(EventMember::class);
     }
 
+    public function guestNotifications(): HasMany
+    {
+        return $this->hasMany(GuestNotification::class);
+    }
+
     public function hasActivePackage(): bool
     {
         return $this->eventPackage && $this->eventPackage->isActive();