added basic support for LilyGo Tlora C6

platformio.ini

@@ -47,6 +47,11 @@ lib_deps =
   me-no-dev/ESPAsyncWebServer @ ^3.6.0
   file://arch/esp32/AsyncElegantOTA
 
+; esp32c6 uses arduino framework 3.x
+[esp32c6_base]
+extends = esp32_base
+platform = https://github.com/pioarduino/platform-espressif32.git
+
 ; ----------------- NRF52 ---------------------
 
 [nrf52_base]