Refactor GatewayModbus and GatewayNetwork components

- Updated GatewayModbusConfig to allow uart_port and pin values to be -1, indicating an unconfigured state.
- Enhanced GatewayNetworkService to support an additional setup AP button with configurable GPIO and active low settings.
- Refactored boot button configuration logic to reduce redundancy and improve clarity.
- Introduced a new method for handling GPIO input configuration.
- Improved boot button task loop to handle both boot and setup AP buttons more effectively.
- Added programming mode functionality to EtsDeviceRuntime, allowing toggling and querying of the programming state.
- Implemented memory checks to avoid unnecessary reads in EtsDeviceRuntime.
- Enhanced security storage to derive factory FDSK from the device's serial number and store it in NVS.
- Updated factory FDSK loading logic to ensure proper key generation and storage.

Signed-off-by: Tony <tonylu@tony-cloud.com>

components/gateway_network/include/gateway_network.hpp

@@ -56,8 +56,10 @@ struct GatewayNetworkServiceConfig {
   bool status_led_active_high{true};
   int boot_button_gpio{-1};
   bool boot_button_active_low{true};
+  int setup_ap_button_gpio{-1};
+  bool setup_ap_button_active_low{true};
   uint32_t boot_button_long_press_ms{3000};
-  uint32_t boot_button_task_stack_size{2048};
+  uint32_t boot_button_task_stack_size{8192};
   UBaseType_t boot_button_task_priority{2};
   uint32_t udp_task_stack_size{4096};
   UBaseType_t udp_task_priority{4};