Implement KNX Gateway functionality with support for DALI integration

- Added gateway_knx.cpp to handle KNX communication and DALI bridge requests.
- Implemented functions for encoding/decoding KNX telegrams and managing group writes.
- Introduced GatewayKnxBridge and GatewayKnxTpIpRouter classes for managing KNX to DALI routing and IP tunneling.
- Added configuration handling for KNX settings, including UART and multicast options.
- Implemented error handling and logging for various KNX operations.

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

components/gateway_bridge/include/gateway_bridge.hpp

@@ -9,6 +9,7 @@
 #include "esp_err.h"
 #include "freertos/FreeRTOS.h"
 #include "freertos/task.h"
+#include "gateway_knx.hpp"
 #include "gateway_modbus.hpp"
 
 namespace gateway {
@@ -22,6 +23,8 @@ struct GatewayBridgeServiceConfig {
   bool modbus_startup_enabled{false};
   bool bacnet_enabled{false};
   bool bacnet_startup_enabled{false};
+  bool knx_enabled{false};
+  bool knx_startup_enabled{false};
   bool cloud_enabled{true};
   bool cloud_startup_enabled{false};
   uint32_t modbus_task_stack_size{6144};
@@ -31,6 +34,9 @@ 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};
+  UBaseType_t knx_task_priority{5};
+  std::optional<GatewayKnxConfig> default_knx_config;
 };
 
 struct GatewayBridgeHttpResponse {