feat: New variant esp32c3_super_mini (#7133)

https://www.espboards.dev/esp32/esp32-c3-super-mini/

DIY build by @AntonKartajaya on Meshtastic Discord and a PCB version WIP by https://github.com/NomDeTom.

- I2C
  - I2C_SDA: 1
  - I2C_SCL: 0
  - OLED: SSD1306
- GPS
  - GPS_RX_PIN: 20
  - GPS_TX_PIN: 21
- Button
  - BUTTON_PIN: 9
- SPI
  - SCK: 10
  - MISO: 6
  - MOSI: 7
  - CS: 8
- LoRa: SX1262
  - LORA_RESET: 5
  - LORA_DIO1: 3
  - LORA_RXEN: 2
  - LORA_BUSY: 4

Signed-off-by: Andrew Yong <me@ndoo.sg>

variants/diy/platformio.ini

@@ -141,3 +141,16 @@ build_flags =
   -D ARDUINO_USB_MODE=0
   -D ARDUINO_USB_CDC_ON_BOOT=1
   -I variants/diy/t-energy-s3_e22
+
+; ESP32 C3 Super Mini Development Board
+; https://www.espboards.dev/esp32/esp32-c3-super-mini/
+[env:esp32c3_super_mini]
+extends = esp32c3_base
+board = esp32-c3-devkitm-1
+build_flags =
+  ${esp32_base.build_flags}
+  -D PRIVATE_HW
+  -I variants/diy/esp32c3_super_mini
+  -D ARDUINO_USB_MODE=1
+  -D ARDUINO_USB_CDC_ON_BOOT=1
+board_level = extra