Migrate backend to Porto architecture and fix minor bugs

- Fully transitioned the backend to the Porto architectural pattern
- Improved code organization and maintainability
- Fixed minor bugs and inconsistencies

app/Ship/Traits/HasSeo.php

@@ -0,0 +1,15 @@
+<?php
+
+namespace App\Ship\Traits;
+
+use App\Ship\Models\Seo;
+use Illuminate\Database\Eloquent\Relations\MorphOne;
+
+
+trait HasSeo
+{
+    public function seo(): MorphOne
+    {
+        return $this->morphOne(Seo::class, 'seoable');
+    }
+}