Nano ESP32: erase flash when running "Burn Bootloader"

Author: pillo79

Diff for: boards.txt

@@ -24163,6 +24163,7 @@ nano_nora.build.memory_type={build.boot}_{build.psram_type}
 nano_nora.build.disable_pin_remap=
 
 nano_nora.tools.esptool_py.program.pattern_args=--chip {build.mcu} --port "{serial.port}" --before default_reset --after hard_reset write_flash -z --flash_mode {build.flash_mode} --flash_freq {build.flash_freq} --flash_size {build.flash_size} {build.bootloader_addr} "{build.path}/{build.project_name}.bootloader.bin" 0x8000 "{build.path}/{build.project_name}.partitions.bin" 0xe000 "{runtime.platform.path}/tools/partitions/boot_app0.bin" 0xf70000 "{build.variant.path}/extra/nora_recovery/nora_recovery.ino.bin" 0x10000 "{build.path}/{build.project_name}.bin"
+nano_nora.tools.esptool_py.erase.pattern_args=--chip {build.mcu} --port "{serial.port}" --before default_reset --after hard_reset erase_flash
 
 nano_nora.menu.PinNumbers.default=By Arduino pin (default)
 nano_nora.menu.PinNumbers.byGPIONumber=By GPIO number (legacy)