Function fif::files::scan_directory

pub fn scan_directory(
    dirs: &Path,
    exts: Option<&BTreeSet<&str>>,
    exclude: Option<&BTreeSet<&str>>,
    scan_opts: &ScanOpts
) -> Option<Vec<DirEntry>>

Scans a given directory with WalkDir, filters with wanted_file, checks for errors, and returns a vector of DirEntrys.