Fixed musl binary download for cargo-generate

[rdbo]

Added detection for Linux targets that use the musl libc on the download of the cargo-generate binary. The current main branch does not do any detection for it, only for SASS.
With this pull request, I managed to get cargo-leptos and leptos itself fully working on Alpine Linux.

[aperepel]

Leaving a note here to review when #168 is merged, as I did extensive refactoring of the commands there.

[rdbo]

Leaving a note here to review when #168 is merged, as I did extensive refactoring of the commands there.

I could make another PR when yours get merged. Since I use a Linux with musl, I could also test mine and your changes right away.

[aperepel]

Hey @rdbo , the #168 has been merged. Feel free to update this PR, the changes will go into the

cargo-leptos/src/ext/exe.rs

Line 496 in 3320ec6

fn download_url(&self, target_os: &str, target_arch: &str, version: &str) -> Result<String>;

function impls.

I don't have a musl-based linux readily accessible at the moment, but looking over the changes, was wondering - should this logic be applied to other commands, too? Would appreciate if you could check if it applies to other command binaries and update. Thanks!

[rdbo]

There already is a check for SASS for musl, but not for cargo-generate. As for the other binaries, they seem to be statically compiled, since they are very big. I will double check though.
Working on the PR.

[rdbo]

@aperepel rebased from your changes and added the proper cargo-generate binary download for musl. Everything is fine, I got the leptos-rs/start template to work 👍
As for the other binaries, they are statically linked, so they're the same on glibc and musl.