Add an option to configure WDT action

[playfulFence]

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Pull Request Details 📖

Description

close #1831

Also made some small improvements in code quality, aligned mode names with the official Espressif documentation

Currently, setting up MWDT stages is only possible with custom bootloader. Also, I think we should document the whole process of creating a custom bootloader and using it with our driver (I've opened an issue for this: esp-rs/book#170)

Testing

Used implemented function in example.

[playfulFence]

Update: I've managed to resolve problems with MWDT, it was about bootloader settings.
It turns out we need to disable TASK_WDT and INT_WDT to make MWDT work "predictable".
I'm working on a proper solution of how to implement it in our driver in a less painful way...

[jessebraham]

We discussed this in our triage meeting today. I think for the time being, we are okay with simply documenting the requirements for the bootloader; we'd like to continue investigating if we can bypass this step, however there's no reason not to move forward with this PR IMO.

@playfulFence when you're able, could you please make sure the requirements for MWDT are clearly documented, and then get this PR ready for review/merge?

[bjoernQ]

LGTM

[bjoernQ]

While we can't test the reset functionality we could probably have HIL tests to test the interrupt - but maybe in a follow-up PR

[jessebraham]

Thanks, LGTM! (Other than the broken imports 😁 )