* removed obsolete "-D CONFIG_LITTLEFS_FOR_IDF_3_2" => this was only for the old "lorol/LITTLEFS" whic is not used any more in WLED
* commented out "-D ARDUINO_USB_MODE=1", because users have reported that it leads to boot "hanging" when no USB-CDC is connected
* Added buildenv and 32MB partition for esp32s3-WROOM-2 with 32MB flash
* disabled "-mfix-esp32-psram-cache-issue" warning for -S2 and -S3 (only necessary for classic esp32 "rev.1", but harmful on S3 or S2)
