esp_sleep_enable_ulp_wakeup() function

- ESP_OK on success - ESP_ERR_NOT_SUPPORTED if additional current by touch (CONFIG_RTC_EXT_CRYST_ADDIT_CURRENT) is enabled. - ESP_ERR_INVALID_STATE if ULP co-processor is not enabled or if wakeup triggers conflict

On ESP32, ULP wakeup source cannot be used when RTC_PERIPH power domain is forced, to be powered on (ESP_PD_OPTION_ON) or when ext0 wakeup source is used.