v1.7.0 to add support to ESP32-C3

### Releases v1.7.0

1. Add **LittleFS and SPIFFS** support to new **ESP32-S2** boards (**Arduino ESP32C3_DEV**). Check [HOWTO Install esp32 core for ESP32-S2 (Saola, AI-Thinker ESP-12K) and ESP32-C3 boards into Arduino IDE](#howto-install-esp32-core-for-esp32-s2-saola-ai-thinker-esp-12k-and-esp32-c3-boards-into-arduino-ide).
2. Add **EEPROM and SPIFFS** support to new **ESP32-C3** boards (**Arduino ESP32C3_DEV**). Check [HOWTO Install esp32 core for ESP32-S2 (Saola, AI-Thinker ESP-12K) and ESP32-C3 boards into Arduino IDE](#howto-install-esp32-core-for-esp32-s2-saola-ai-thinker-esp-12k-and-esp32-c3-boards-into-arduino-ide).

Author: khoih-prog

CONTRIBUTING.md

@@ -29,7 +29,7 @@ Please ensure to specify the following:
 Arduino IDE version: 1.8.13
 ESP8266 Core Version 2.7.4
 OS: Ubuntu 20.04 LTS
-Linux xy-Inspiron-3593 5.4.0-71-generic #79-Ubuntu SMP Wed Mar 24 10:56:57 UTC 2021 x86_64 x86_64 x86_64 GNU/Linux
+Linux xy-Inspiron-3593 5.4.0-72-generic #80-Ubuntu SMP Mon Apr 12 17:35:00 UTC 2021 x86_64 x86_64 x86_64 GNU/Linux
 
 Context:
 I encountered an endless loop while trying to connect to Local WiFi.