Add issue triage helper (#4210)

This script/workflow is designed to aid the TC/GC in issue triage. Right
now it is set to 'dry run' mode so we can validate that it functions
properly; We will need a followup PR to change it to actually modify
issues.

---------

Co-authored-by: Morgan McLean <morgan_mclean@hotmail.com>
Co-authored-by: Severin Neumann <neumanns@cisco.com>

.github/scripts/triage-helper/Pipfile

@@ -0,0 +1,13 @@
+[[source]]
+url = "https://pypi.org/simple"
+verify_ssl = true
+name = "pypi"
+
+[packages]
+pygithub = "*"
+pytz = "*"
+
+[dev-packages]
+
+[requires]
+python_version = "3.11"