add new rules for store and update package

app/Rules/ValidateItemOwnership.php

@@ -0,0 +1,23 @@
+<?php
+
+namespace App\Rules;
+
+use App\Models\Item;
+use Closure;
+use Illuminate\Contracts\Validation\ValidationRule;
+
+class ValidateItemOwnership implements ValidationRule
+{
+    /**
+     * Run the validation rule.
+     *
+     * @param  \Closure(string, ?string=): \Illuminate\Translation\PotentiallyTranslatedString  $fail
+     */
+    public function validate(string $attribute, mixed $value, Closure $fail): void
+    {
+        $item = Item::find($value);
+        if(!($item && $item->user_id === auth()->id())){
+            $fail(":attribute have invalid ownership");
+        }
+    }
+}