Function tugger_apple::find_developer_platforms

pub fn find_developer_platforms(
    developer_dir: &Path
) -> Result<Vec<(String, PathBuf)>>

Find “platforms” given a developer directory.

Platforms are effectively targets that can be built for.

Platforms are defined by the presence of a Platforms directory under the developer directory. This directory layout is only recognized for modern Xcode layouts.

Returns a vector of (platform, path) tuples denoting the platform name and its base directory.