[llvm] [llvm][utils] Add a script to use PRs over pushing to main (PR #166473)

[Paul Kirth via llvm-commits]

================
@@ -0,0 +1,653 @@
+#!/usr/bin/env python3
+"""A script to automate the creation and landing of a stack of Pull Requests."""
+
+import argparse
+import os
+import re
+import subprocess
+import sys
+import time
+from typing import List, Optional
+
+import requests
----------------
ilovepi wrote:

Moved to use just things from the sandard lib.

https://github.com/llvm/llvm-project/pull/166473