When editing weeknotes with the website script, create the page from the Hugo archetype and process it

This implements what the Makefile did, but with a more intuitive interface.
Remove the weeknotes target from the Makefile.

scripts/erynwells_me/commands.py

@@ -0,0 +1,18 @@
+#!/usr/bin/env python3.12
+# Eryn Wells <eryn@erynwells.me>
+
+import os
+import subprocess
+import sys
+
+
+def edit_file(path, editor=None):
+    editor = editor or os.environ.get('VISUAL') or os.environ.get('EDITOR') or 'vi'
+    subprocess.run(
+        f'{editor} "{path}"',
+        stdin=sys.stdin,
+        stdout=sys.stdout,
+        stderr=sys.stderr,
+        env=os.environ,
+        shell=True,
+    )