Function tugger_apple::find_sdks_in_directory

pub fn find_sdks_in_directory(root: &Path) -> Result<Vec<AppleSdk>>

Finds SDKs in a specified directory.

Directory entries are often symlinks pointing to other directories. SDKs are annotated with an is_symlink field to denote when this is the case. Callers may want to filter out symlinked SDKs to avoid duplicates.