fix: bench script sys.path so audio_cleanup imports

scripts/bench_enhance.py

@@ -1,6 +1,10 @@
 #!/usr/bin/env python3
 """RTF bench for hop/window speechbrain enhance."""
+import sys
 import time
+from pathlib import Path
+
+sys.path.insert(0, str(Path(__file__).resolve().parents[1]))
 
 import numpy as np