[FSSDK-8320] fix type hints (#429)

* Create py.typed

Author: andrewleap-optimizely

optimizely/event/event_processor.py

@@ -351,7 +351,7 @@ class ForwardingEventProcessor(BaseEventProcessor):
 
     def __init__(
         self,
-        event_dispatcher: type[EventDispatcher] | CustomEventDispatcher,
+        event_dispatcher: Optional[type[EventDispatcher] | CustomEventDispatcher],
         logger: Optional[_logging.Logger] = None,
         notification_center: Optional[_notification_center.NotificationCenter] = None
     ):

optimizely/optimizely_config.py

@@ -243,7 +243,7 @@ def stringify_conditions(self, conditions: str | list[Any], audiences_map: dict[
                     operand = conditions[i].upper()
                 else:
                     # Check if element is a list or not
-                    if type(conditions[i]) == list:
+                    if isinstance(conditions[i], list):
                         # Check if at the end or not to determine where to add the operand
                         # Recursive call to call stringify on embedded list
                         if i + 1 < length:

optimizely/py.typed

@@ -0,0 +1 @@
+