Revisit HIL

[SergioGasquez]

Revisit HIL CI and see how we can improve it. I would like it to cover more corner cases and more arguments. Maybe we need to add some xtask integration to make things easier?

Shall we also cover cargo-espflash with some ESP-IDF application?

We could also add a checksum-md5 test

There are also some known issues (Already fixed):

• flash test needs to use --no-skip otherwise it won't flash anything:

[2025-01-28T11:22:09Z INFO ] Segment at address '0x0' has not changed, skipping write
22
[2025-01-28T11:22:09Z INFO ] Segment at address '0x8000' has not changed, skipping write
23
[2025-01-28T11:22:10Z INFO ] Segment at address '0x10000' has not changed, skipping write

• Some HIL runs are cancelled: https://github.com/esp-rs/espflash/actions/runs/13010293728

[jessebraham]

With #754 merged, what is still left to do here?