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_bridge/include/gateway_bridge.hpp

@@ -1,5 +1,6 @@
 #pragma once
 
+#include <cstddef>
 #include <cstdint>
 #include <memory>
 #include <optional>
@@ -37,7 +38,7 @@ struct GatewayBridgeServiceConfig {
   std::vector<int> reserved_uart_ports;
   uint32_t bacnet_task_stack_size{8192};
   UBaseType_t bacnet_task_priority{5};
-  uint32_t knx_task_stack_size{8192};
+  uint32_t knx_task_stack_size{12288};
   UBaseType_t knx_task_priority{5};
   std::optional<GatewayKnxConfig> default_knx_config;
 };
@@ -66,6 +67,14 @@ class GatewayBridgeService {
 
   ChannelRuntime* findRuntime(uint8_t gateway_id);
   const ChannelRuntime* findRuntime(uint8_t gateway_id) const;
+  ChannelRuntime* selectKnxEndpointRuntime();
+  bool isKnxEndpointRuntime(const ChannelRuntime* runtime) const;
+  esp_err_t startKnxEndpoint(ChannelRuntime* requested_runtime,
+                             std::set<int>* used_uarts = nullptr);
+  esp_err_t stopKnxEndpoint(ChannelRuntime* requested_runtime);
+  DaliBridgeResult routeKnxCemiFrame(const uint8_t* data, size_t len);
+  DaliBridgeResult routeKnxGroupWrite(uint16_t group_address, const uint8_t* data,
+                                      size_t len);
   void handleDaliRawFrame(const DaliRawFrame& frame);
   void collectUsedRuntimeResources(uint8_t except_gateway_id,
                                    std::set<uint16_t>* modbus_tcp_ports,
@@ -76,6 +85,7 @@ class GatewayBridgeService {
   GatewayCache& cache_;
   GatewayBridgeServiceConfig config_;
   std::vector<std::unique_ptr<ChannelRuntime>> runtimes_;
+  ChannelRuntime* knx_endpoint_runtime_{nullptr};
 };
 
 }  // namespace gateway