TYP: add missing implicit re-exports in _core.numeric

Partial port of numpy/numtype#221

Author: jorenham

numpy/_core/numeric.pyi

@@ -47,6 +47,13 @@ from numpy import (
     _OrderKACF,
     _OrderCF,
 )
+from .fromnumeric import (
+    all as all,
+    any as any,
+    argpartition as argpartition,
+    matrix_transpose as matrix_transpose,
+    mean as mean,
+)
 from .multiarray import (
     # re-exports
     arange,