Introduce order management functionality including web routes for creating orders and a new API endpoint for price calculations. This change also cleans up the codebase by removing various debug scripts used during the development of the shipping rate logic.
- Add `OrderController` to handle order creation and success redirection.
- Add `POST /v1/calculate` endpoint for pricing calculations.
- Define web routes for order creation flow (`/order`).
- Remove multiple debug PHP scripts from the `04_Laravel` directory.
- Add base layout and order view directories.
