* variants + S3 GPIO48 * fixes unphone8.build.flash_type * fixes unphone8.build.flash_type * heltec board name issue step 1 * heltec board name issue step 2 * fixes defines and new boards * final review
* GPIO refactoring GPIO now using ESP-IDF API on all chips. LEDC interrupt fix removed - no longer needed. Edited pins_arduino.h in variants according to changes in gpio. * Edited analog channels functions