Add method to get offers by articles with siblings, enhance display

app/Models/Shop/Article.php

@@ -50,6 +50,11 @@ class Article extends Model implements HasMedia
         return $this->morphTo();
     }
 
+    public function siblings()
+    {
+        return $this->hasMany(Article::class, 'name', 'name');
+    }
+
     public function tags()
     {
         return $this->morphToMany(Tag::class, 'taggable');