Improve subscription UI with large tier buttons

- Replace dropdown tier selection with attractive visual buttons
- Add tier-button CSS with hover effects and selection states
- Remove 'or pay by card' divider from subscription form for cleaner UI
- Update JavaScript to handle tier button selection events
- Fix Stripe module import conflict by renaming stripe directory to stripe_config
- Add responsive grid layout for tier buttons on mobile devices

stripe_config/.venv/lib/python3.12/site-packages/stripe/util.py

@@ -0,0 +1,19 @@
+# -*- coding: utf-8 -*-
+from typing_extensions import TYPE_CHECKING
+from warnings import warn
+
+warn(
+    """
+    The stripe.util package is deprecated, please change your
+    imports to import from stripe directly.
+    From:
+      from stripe.util import convert_to_stripe_object
+    To:
+      from stripe import convert_to_stripe_object
+    """,
+    DeprecationWarning,
+    stacklevel=2,
+)
+
+if not TYPE_CHECKING:
+    from stripe._util import *  # noqa