Keep file permissions when extracting zip archives on Unix (#31304)

Follow-up of https://github.com/zed-industries/zed/pull/31080

Stop doing

```rs
#[cfg(not(windows))]
{
    file.set_permissions(<fs::Permissions as fs::unix::PermissionsExt>::from_mode(
        0o755,
    ))
    .await?;
}
```

after extracting zip archives on Unix, and use an API that provides the
file permissions data for each archive entry.

Release Notes:

- N/A

crates/dap/src/adapters.rs

@@ -309,7 +309,7 @@ pub async fn download_adapter_from_github(
             let mut file = File::create(&zip_path).await?;
             futures::io::copy(response.body_mut(), &mut file).await?;
             let file = File::open(&zip_path).await?;
-            extract_zip(&version_path, BufReader::new(file))
+            extract_zip(&version_path, file)
                 .await
                 // we cannot check the status as some adapter include files with names that trigger `Illegal byte sequence`
                 .ok();