renamed token bucket module so it's only home to the in-memory, lazy refill version

my_limiter/algos/__init__.py

@@ -4,7 +4,7 @@ These are implementations of different (in-application) rate limiting algorithms
 `identifier` is used as the first (usually only) argument for each implementation
 because it might refer to IP address, a session ID, or perhaps an API key or token.
 """
-from .token_bucket import token_bucket_in_memory_lazy_refill, TooManyRequests
+from .token_bucket_in_memory import token_bucket_in_memory_lazy_refill, TooManyRequests
 from .leaky_bucket import (
     leaking_bucket_dequeue,
     leaking_bucket_enqueue,

my_limiter/algos/token_bucket_in_memory.py

@@ -16,7 +16,7 @@ REFILL_EVERY_SECONDS = 15
 NUM_TOKENS_TO_REFILL = 4
 
 
-def get_entry_from_token_bucket(identifier: str) -> dict | None:
+def get_entry_from_token_bucket_in_memory(identifier: str) -> dict | None:
     """
     This is implemented independently in order to decouple it from its caller.
     Here it is initially implemented in-memory, but for scalability we'd