Add template for minimal "shell" python script

templates/shell_min.py

@@ -0,0 +1,13 @@
+#!/usr/bin/python3
+# -*- coding: utf-8 -*-
+import subprocess
+
+def sh(cmd: str, return_string: bool = True):
+  """
+  Run chell command 'cmd' and return stdout.
+  """
+    res = subprocess.check_output(cmd, shell=True)
+    if return_string:
+        res = res.decode()
+
+    return res