RMT: Use gpio::Level for carrier and pulse levels

[wisp3rwind]

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Submission Checklist 📝

• I have updated existing examples or added new ones (if applicable).
• I have used cargo xtask fmt-packages command to ensure that all changed code is formatted correctly.
• My changes were added to the CHANGELOG.md in the proper section.
• I have added necessary changes to user code to the Migration Guide.
• My changes are in accordance to the esp-rs API guidelines

Extra:

• I have read the CONTRIBUTING.md guide and followed its instructions.

Pull Request Details 📖

Description

This changes the RMT configuration structs and PulseCodes to use gpio::Level instead of bool to specify output levels.

I found this much more descriptive and readable than bools. What do you think?

Testing

• Tested that the embassy_hal_{r|t}x examples compile for riscv.
• Tested a heavily modified RMT driver including this change in tx mode on an ESP Rust Board.

[Dominaezzz]

LGTM

[bjoernQ]

Thanks

[wisp3rwind]

Rebased on main & squashed fixup commits.