beam: add _run_ng test runner for next_greater

wizard-work/beam/_run_ng.py

@@ -0,0 +1,5 @@
+import test_next_greater as t
+for n in [x for x in dir(t) if x.startswith("test_")]:
+    getattr(t, n)()
+    print("PASS", n)
+print("ALL PASS")