feat: Enhance DALI Gateway with RGBW and RGBCW support

- Added support for RGBW and RGBCW color modes in the DALI Gateway.
- Updated JSON color mode parsing to handle new color types.
- Extended the StoreDt8SceneSnapshot function to include white, amber, and free color parameters.
- Introduced new methods in DaliGatewayBridge for setting RGBW, RGBCW, and RGBWAF colors.
- Modified KnxDaliChannel to send RGBW and RGBCW colors based on the color type.
- Updated parameter types and definitions in the KNX product XML files to accommodate new color modes.
- Enhanced README with migration details and validation instructions.

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

components/knx_dali_gw/include/knxprod.h

@@ -1,6 +1,10 @@
 #pragma once
 
+#include <stdint.h>
+
+#if __has_include("sdkconfig.h")
 #include "sdkconfig.h"
+#endif
 
 #ifndef CONFIG_GATEWAY_KNX_OEM_MANUFACTURER_ID
 #define CONFIG_GATEWAY_KNX_OEM_MANUFACTURER_ID 0x00A4
@@ -11,12 +15,12 @@
 #endif
 
 #ifndef CONFIG_GATEWAY_KNX_OEM_APPLICATION_VERSION
-#define CONFIG_GATEWAY_KNX_OEM_APPLICATION_VERSION 0x08
+#define CONFIG_GATEWAY_KNX_OEM_APPLICATION_VERSION 0x09
 #endif
 
 // Minimal stub for knxprod.h — generated KNX product definitions.
 // The full file (1796 bytes of parameters, 1439 group objects) will be
-// adapted in Phase 3 to use the gateway/knx API directly.
+// replaced by the OpenKNXproducer-generated header.
 
 // Product identity
 #define MAIN_OpenKnxId (CONFIG_GATEWAY_KNX_OEM_MANUFACTURER_ID & 0xff)
@@ -45,6 +49,8 @@ enum PT_ColorType : uint8_t {
   PT_colorType_RGB = 1,
   PT_colorType_TW = 2,
   PT_colorType_XYY = 3,
+  PT_colorType_RGBW = 4,
+  PT_colorType_RGBCW = 5,
 };
 
 enum PT_ColorSpace : uint8_t {