Arduino core 3.0.6 (#40)

* Update README.md

* esptool.py v4.8.0

* add cmake_utilities for C2

* add auto select "espidf" when pio var "custom_sdkconfig" is set

* Update main.py

* revert changes

* Update platformio.ini

* Update platformio.ini

* Update Zigbee_On_Off_Switch.ino

* Update Zigbee_On_Off_Light.ino

* Update examples.yml

* IDF v5.1.4.241008

* Arduino Core 3.0.6

* Update README.md

platform.py

@@ -39,6 +39,9 @@ class Espressif32Platform(PlatformBase):
         mcu = variables.get("board_build.mcu", board_config.get("build.mcu", "esp32"))
         frameworks = variables.get("pioframework", [])
 
+        if variables.get("custom_sdkconfig") is not None:
+            frameworks.append("espidf")
+
         if "arduino" in frameworks:
             self.packages["framework-arduinoespressif32"]["optional"] = False
             self.packages["framework-arduinoespressif32-libs"]["optional"] = False