feat(purchase): add checkout expiration settings and reservation status to purchase items

- Introduced a new configuration file for purchase settings, including checkout and payment expiration times.
- Added a migration to include a `reservation_status` column in the `compra_items` table, defaulting to 'active' and updating existing records based on purchase status.
- Created a migration to add an `expires_at` timestamp to the `compras` table, updating it for existing records based on their status.
- Scoped unique indexes in the `carritos` table to only active carts, adding virtual columns for active user and guest tokens.
- Implemented a console command to expire overdue purchases and release stock reservations, scheduled to run every minute.
- Added tests for Google token exchange and login functionality, ensuring proper cart handling and user authentication.
- Updated purchase-related tests to reflect changes in item handling and customer data validation.

app/Domains/Purchase/Requests/StartCheckoutRequest.php

@@ -0,0 +1,51 @@
+<?php
+
+namespace App\Domains\Purchase\Requests;
+
+use Illuminate\Foundation\Http\FormRequest;
+use Illuminate\Validation\Rule;
+
+class StartCheckoutRequest extends FormRequest
+{
+    public function authorize(): bool
+    {
+        return $this->user() !== null;
+    }
+
+    /**
+     * @return array<string, mixed>
+     */
+    public function rules(): array
+    {
+        return [
+            'cart_id' => [
+                'required_without:direct_item',
+                Rule::prohibitedIf(fn (): bool => $this->has('direct_item')),
+                'integer',
+                'exists:carritos,id',
+            ],
+            'direct_item' => [
+                'required_without:cart_id',
+                Rule::prohibitedIf(fn (): bool => $this->has('cart_id')),
+                'array',
+            ],
+            'direct_item.catalog_item_id' => [
+                'required_with:direct_item',
+                'integer',
+            ],
+            'direct_item.variant_id' => [
+                'nullable',
+                'integer',
+            ],
+            'direct_item.cantidad' => [
+                'required_with:direct_item',
+                'integer',
+                'min:1',
+            ],
+            'dni' => ['prohibited'],
+            'telefono' => ['prohibited'],
+            'nombre_apellido' => ['prohibited'],
+            'email' => ['prohibited'],
+        ];
+    }
+}