Pytest-embedded

Fix

- **idf**: use fixed major version instead of major.minor for esp-coredump
- **serial**: port occupied before init finished

Feat

- **esp**: Add `--erase-flash` option to erase the flash before programming

Fix

- **esp**: fix esptool import

Fix

- **esp**: loose esptool version dependency. remove the upper limit

Feat

- **idf**: add cli option "--skip-check-coredump"

Fix

- **idf**: make elf file detection optional

Feat

- **idf**: added erase_flash and erase_partition functionality

Fix

- **idf**: KeyError when not enabled coredump related configs

Fix

- **esp**: remove cryptography version limit