[database] added high-level db interface for BRSU in __init__.py

bob/pad/face/database/__init__.py

@@ -9,6 +9,7 @@ from .celeb_a import CELEBAPadDatabase
 from .maskattack import MaskAttackPadDatabase
 from .casiasurf import CasiaSurfPadDatabase
 from .casiafasd import CasiaFasdPadDatabase
+from .brsu import BRSUPadDatabase
 
 
 # gets sphinx autodoc done right - don't remove it
@@ -39,6 +40,7 @@ __appropriate__(
     MaskAttackPadDatabase,
     CasiaSurfPadDatabase,
     CasiaFasdPadDatabase,
+    BRSUPadDatabase
 )
 
 __all__ = [_ for _ in dir() if not _.startswith('_')]