bulk rename to flupdt, add CLI, add README, add .gitignore

Signed-off-by: ahuston-0 <aliceghuston@gmail.com>

flupdt/cli.py

@@ -0,0 +1,11 @@
+#!/usr/bin/env python3
+import argparse
+
+
+def parse_inputs():
+    parser = argparse.ArgumentParser()
+    parser.add_argument(
+        "flake_path", metavar="flake-path", help="path to flake to evaluate"
+    )
+    args = parser.parse_args()
+    return args