Add rust-raspi3-tutorial ?

[andre-richter]

In the meantime, my micro-tutorial collection for doing bare-metal embedded Rust stuff on the AArch64 based RaspberryPI3 grew to 14 tutorials as of date.

https://github.com/rust-embedded/rust-raspi3-tutorial

Would it be a candidate to list on the docs page?

CC @rust-embedded/resources

[yerke]

l took liberty to open a PR, even though there was no response here. I hope it's OK.

[andre-richter]

Thanks a lot, much appreciated!

I totally forgot about this one.