feat: support glob patterns in exclude-crate-paths (#122)

[nadzyah]

This PR adds glob pattern support to the exclude field in exclude-crate-paths.

Now you can exclude files by pattern instead of just exact names:

exclude-crate-paths = [
    { name = "ring", exclude = "pregenerated/*.o" },
    { name = "*", exclude = "tests" },
    { name = "openssl-sys", exclude = "**/*.a" }
]

Helpful in removing build artefacts, platform-specific binaries, and reducing vendor directory size without having to list every single file.
Backwards compatible - existing exact path exclusions continue to work unchanged.
Fixes #122

[cgwalters]

Thanks for working on this!