Use -frust-crate=

[CohenArthur]

Since Rust-GCC/gccrs#788 was merged, we can now set the crate name in gccrs via the cargo wrapper

[Taym95]

Hi @CohenArthur , will be nice to have doc on how to contribute to pick these first issues.

[CohenArthur]

Yeah sorry about that @Taym95 the project isn't really finished yet :) for this, you'll need to look at the args.rs file and understand how we structure GCC args vs rustc args. One of the steps will be to add handling for --crate-name and "translate" that to -frust-crate for the gccrs arguments.