Allow clippy::redundant_pub_crate

[dnaka91]

This is my first PR to this project so please bear with me.

While using this crate in my project I noticed that the clippy::redundant_pub_crate (part of clippy::nursery) came up when I was using the derive macro in a module within a binary crate.

For example my trimmed down project layout is like this:

src/main.rs
src/services/log.rs <-- using the pin_project derive macro here creates a clippy warning

This change allows the clippy::redundant_pub_crate lint on all generated code to silence the lint messages. I hope this is the right spot to add the #[allow(...)] attribute.

[taiki-e]

Thanks! Could you run the following command to fix expandtest failure?

rm -r tests/expand/tests/expand/*.expanded.rs && cargo +nightly test --manifest-path tests/expand/Cargo.toml

or (after rebase)

bash scripts/expandtest.sh

[dnaka91]

Thank you for the quick reply.
I rebased and updated the expansion tests.

[taiki-e]

bors r+

[bors]

Build succeeded:

• ci