Incorrect output directory reported with mismatched '-' and '_' chars

[TyPR124]

In crate names, the - and _ characters are treated as equal. For example, cargo_download is an alias of cargo-download.

cargo download reports the extracted directory as the name passed in, but actually extracts to the proper directory name.

See:

PS D:\dev> cargo download -x cargo_download
INFO: cargo-download v0.1.2
INFO: Latest version of crate cargo_download=* is 0.1.2
INFO: Crate `cargo_download==0.1.2` downloaded successfully
INFO: Crate content extracted to ./cargo_download-0.1.2/
PS D:\dev> cd cargo_download-0.1.2
Set-Location: Cannot find path 'D:\dev\cargo_download-0.1.2' because it does not exist.

The issue can also happen in reverse with crates that have _ in their proper name.

I feel the extracted directory should stay as the proper name, and the reported directory should be fixed to reflect that.