- Introduced `selfserve_lane_command_arguments` class for managing lane command parameters (e.g., customer number, license plate).
- Added traits for handling lane timer, invoice generation, license plate, and customer number management.
- Implemented minute-based billing logic with `selfserve_minute_product_c` configuration.
- Enhanced `selfserve_lane` with new behaviors: command arguments, invoicing, and time handling.
- Added `/modules/self-serve/lane/command` route for executing lane commands (START, STOP, RESET).
- Updated `/modules/self-serve/lane/status` route to include additional lane details (wash start, elapsed time, license plate, etc.).
- Improved Shelly device relay control for port management.