feat(cart): implement cart management with add, update, and remove item functionalities

app/Domains/Cart/routes/api.php

@@ -0,0 +1,11 @@
+<?php
+
+use App\Domains\Cart\Controllers\CartController;
+use Illuminate\Support\Facades\Route;
+
+Route::prefix('tenants/{tenant:codigo}')->group(function (): void {
+    Route::get('cart', [CartController::class, 'show']);
+    Route::post('cart/items', [CartController::class, 'addItem']);
+    Route::patch('cart/items/{productVariant}', [CartController::class, 'updateItemQuantity']);
+    Route::delete('cart/items/{productVariant}', [CartController::class, 'removeItem']);
+});