Finds wake-word and not-wake-word wavs in folder

def find_wavs(folder: str) -> Tuple[List[str], List[str]]:
    """Finds wake-word and not-wake-word wavs in folder"""
    return (glob_all(join(folder, 'wake-word'), '*.wav'),
            glob_all(join(folder, 'not-wake-word'), '*.wav'))