Add target debug_coredump

[frostmorn]

Steps to implement in a target

1. Download coredump from esp32s3:
   esptool.py --chip esp32s3 --port <lilka port> read_flash 0xff0000 0x10000 coredump.bin

2. Analyze the core dump:
   xtensa-esp32s3-elf-gdb -c <coredump.bin> <firmware.elf>

this would allow to debug keira better.
For enabling these features platformio.ini should contain build_flags below

build_flags = -DCORE_DEBUG_LEVEL=5 -DESP_COREDUMP_ENABLE_TO_FLASH=1