Add support for parsing Rust 2024 edition of #[unsafe(no_mangle)] and unsafe(export_name = "foo")] attributes.

[mmusial]

Hi,

This change enable csbindgen to work with Rust 2024, which requires attributes to be inside unsafe(), like:

#[unsafe(no_mangle)]
#[unsafe(export_name = "foo")]

[arontsang]

fixes! #102

[daxpryce]

Any chance this will be merged in soon?

[yuyoyuppe]

Thoughts on merging this?

cc @guitarrapc

[robertschaedler3]

+1

[neuecc]

Thank you for great contribute and sorry for delayed response. I've merged in #110, it resolve conflict in main. However your commit has been incorporated as is, so I believe there will be no problem with the credit. Thank you.