Implement reset strategies

[SergioGasquez]

PR based on @jessebraham work in #344, I didn't rebase because there were a lot of conflicts and wanted to manually review the changes while comparing them with esptool.

There are only some small differences:

• Updated classic reset function
• Added some debug logs to better debug similar errors in the future
• Use libc instead of nix crate in set_dtr_rts
  • This was the main reason why Implement reset strategies #344 was not working as the tiocmset was returning an error.

Related issues/PRs: #349, #344, #323, #394, #387

Maybe related: #442, #450

Draft PR until some affected user can verify that it's working @georgik did some testing and confirmed that it's working!

[jessebraham]

Sorry this took so long to get resolved, I think everything looks good here. Any further nitpicks/required fixes can be handled in the future as needed.

Thanks for taking care of this!