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/_encode.py

@@ -0,0 +1,45 @@
+import calendar
+import datetime
+import time
+from collections import OrderedDict
+from typing import Generator, Tuple, Any
+
+
+def _encode_datetime(dttime: datetime.datetime):
+    if dttime.tzinfo and dttime.tzinfo.utcoffset(dttime) is not None:
+        utc_timestamp = calendar.timegm(dttime.utctimetuple())
+    else:
+        utc_timestamp = time.mktime(dttime.timetuple())
+
+    return int(utc_timestamp)
+
+
+def _encode_nested_dict(key, data, fmt="%s[%s]"):
+    d = OrderedDict()
+    for subkey, subvalue in data.items():
+        d[fmt % (key, subkey)] = subvalue
+    return d
+
+
+def _api_encode(data) -> Generator[Tuple[str, Any], None, None]:
+    for key, value in data.items():
+        if value is None:
+            continue
+        elif hasattr(value, "stripe_id"):
+            yield (key, value.stripe_id)
+        elif isinstance(value, list) or isinstance(value, tuple):
+            for i, sv in enumerate(value):
+                if isinstance(sv, dict):
+                    subdict = _encode_nested_dict("%s[%d]" % (key, i), sv)
+                    for k, v in _api_encode(subdict):
+                        yield (k, v)
+                else:
+                    yield ("%s[%d]" % (key, i), sv)
+        elif isinstance(value, dict):
+            subdict = _encode_nested_dict(key, value)
+            for subkey, subvalue in _api_encode(subdict):
+                yield (subkey, subvalue)
+        elif isinstance(value, datetime.datetime):
+            yield (key, _encode_datetime(value))
+        else:
+            yield (key, value)