Added Item model, resource and its API.

Updated Category model to have Items.

database/factories/ItemFactory.php

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+<?php
+
+namespace Database\Factories;
+
+use Illuminate\Database\Eloquent\Factories\Factory;
+
+/**
+ * @extends \Illuminate\Database\Eloquent\Factories\Factory<\App\Models\Item>
+ */
+class ItemFactory extends Factory
+{
+    /**
+     * Define the model's default state.
+     *
+     * @return array<string, mixed>
+     */
+    public function definition(): array
+    {
+        return [
+            //
+        ];
+    }
+}

database/migrations/2023_06_14_140000_create_items_table.php

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+<?php
+
+use Illuminate\Database\Migrations\Migration;
+use Illuminate\Database\Schema\Blueprint;
+use Illuminate\Support\Facades\Schema;
+
+return new class extends Migration
+{
+    /**
+     * Run the migrations.
+     */
+    public function up(): void
+    {
+        Schema::create('items', function (Blueprint $table) {
+            $table->id();
+            $table->unsignedBiginteger('category_id')->unsigned();
+            $table->string('uuid');
+            $table->string('name');
+            $table->string('url');
+            $table->string('description');
+            $table->decimal('price', 8, 2);
+            $table->string('image');
+
+            $table->foreign('category_id')->references('id')
+                 ->on('categories')->onDelete('cascade');
+
+            $table->timestamps();
+        });
+    }
+
+    /**
+     * Reverse the migrations.
+     */
+    public function down(): void
+    {
+        Schema::dropIfExists('items');
+    }
+};

database/seeders/ItemSeeder.php

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+<?php
+
+namespace Database\Seeders;
+
+use Illuminate\Database\Console\Seeds\WithoutModelEvents;
+use Illuminate\Database\Seeder;
+
+class ItemSeeder extends Seeder
+{
+    /**
+     * Run the database seeds.
+     */
+    public function run(): void
+    {
+        //
+    }
+}