fix: i2c - async write_read in parallel

[elpiel]

Attempt at parallelising the write_read I2C async fn implementation.

• There might be a need for a join-style async fn wait_for_completion that will wait for both operations to finish, instead of select-ing one or the other

Must

• The code compiles without errors or warnings.
• All examples work.
• cargo fmt was run.
• Your changes were added to the CHANGELOG.md in the proper section.
• You updated existing examples or added examples (if applicable).
• Added examples are checked in CI

Nice to have

• You add a description of your work to this PR.
• You added proper docs for your newly added features and code.

[jessebraham]

Thanks for the PR, I'll do my best to get to this next week!

[MabezDev]

What's the status here? Can we move this along somehow?

[elpiel]

I would suggest someone to pick up this branch/issue and continue it.
I have switched to a different platform for the time being and don't think I'm going back to the issue any time soon.

It still needs a few fixes I suppose and to be tested

[elpiel]

@jessebraham where/how was this fixed?
Can you provide a link?

[jessebraham]

It wasn't fixed yet, you said you were not going to work on it anymore so I closed the PR. I was planning on looking into it this or next week.