Since all of the names defined in the esp-idf already have component names prefixed, like GPIO_*, LEDC_* etc., they read better if all are defined at the top level of the ESP32 module. This also makes them consistent with the esp-idf documentation.

Example: ESP32::GPIO_NUM2 instead of ESP32::GPIO::GPIO_NUM2, when used from outside the scope of the GPIO module.

To fix scripts that top level include GPIO, add include ESP32::Constants.