[bin][util] add python file with reusable functionality

bin/util/common.py

+import os
+import sys
+import functools
+import subprocess
+
+# execute a command and retrieve the output
+def runCommand(command):
+    try:
+        return subprocess.run(command, shell=True, check=True,
+                                       text=True, capture_output=True).stdout
+    except Exception as e:
+        print()
+        print("An error occurred during subprocess run:")
+        print("-- command: {}".format(command))
+        print("-- folder: {}".format(os.getcwd()))
+        print("-- error: {}".format(sys.exc_info()[1]))
+        if "git " in command:
+            print()
+            print("It seems that a git command failed. Please check:\n" \
+                  "    -- is the module registered as git repository?\n" \
+                  "    -- is upstream defined for the branch?\n")
+        raise
+
+# decorator to call function from within the given path
+def callFromPath(path):
+    def decorator_callFromPath(callFunc):
+        @functools.wraps(callFunc)
+        def wrapper_callFromPath(*args, **kwargs):
+            curPath = os.getcwd()
+            os.chdir(path)
+            result = callFunc(*args, **kwargs)
+            os.chdir(curPath)
+            return result
+        return wrapper_callFromPath
+    return decorator_callFromPath