Add separate linalg.py file

Author: asmeurer

numpy_array_api_compat/__init__.py

@@ -19,6 +19,7 @@
 """
 
 from numpy import *
+from . import linalg
 
 # These imports may overwrite names from the import * above.
 from ._aliases import *

numpy_array_api_compat/linalg.py

@@ -0,0 +1 @@
+from numpy.linalg import *