Add support for the hardware CDC in ESP32-C3

[me-no-dev]

No description provided.

[chegewara]

@me-no-dev Is it intended to use Serial.begin() to get serial logs working?

void setup() {
  // put your setup code here, to run once:
Serial.begin(115200);
}

void loop() {
  // put your main code here, to run repeatedly:
Serial.println("test");
delay(1000);
}

Yes, i do have devkit with native USB, and yes i did set tools->... options to use it. And here is log output without Serial.begin():

20:14:53.968 -> ESP-ROM:esp32c3-api1-20210207
20:14:53.968 -> 

nothing more.

[s-light]

@chegewara maybe distantly related to my problem?
esp32.com forum: ESP32-C3 CDC USB usage