Initial work on cart management

app/api/routes/__init__.py

@@ -1 +1 @@
-from . import main_routes,error_routes, product_routes, user_routes
+from app.api.routes import main_routes, error_routes, product_routes, user_routes, cart_routes

app/api/routes/cart_routes.py

@@ -0,0 +1,16 @@
+from flask import jsonify, abort, request
+from flask_jwt_extended import jwt_required, get_jwt_identity
+
+from app.api import bp_cart
+
+from app.services.cart_service import CartService
+
+@bp_cart.route('add/<int:product_id>', methods=['PUT'])
+@jwt_required()
+def add_to_cart(product_id: int):
+	user_id = get_jwt_identity()
+	count = request.args.get('count', default=1, type=int)
+	
+	result, status_code = CartService.add_to_cart(user_id, product_id, count)
+
+	return result, status_code