Add return type annotations to from_url methods

- Add return type annotation to Redis.from_url() in client.py
- Add parameter and return type annotations to utils.from_url()
- Improves type safety and IDE autocomplete support
- Resolves MyPy no-untyped-call errors for users

Author: cheizdo2-art

redis/asyncio/client.py

@@ -126,12 +126,12 @@ class Redis(
 
     @classmethod
     def from_url(
-        cls,
+        cls: type[_RedisT],
         url: str,
         single_connection_client: bool = False,
         auto_close_connection_pool: Optional[bool] = None,
         **kwargs,
-    ):
+    ) -> _RedisT:
         """
         Return a Redis client object configured from the given URL
 

redis/asyncio/utils.py

@@ -1,10 +1,10 @@
-from typing import TYPE_CHECKING
+from typing import Any, TYPE_CHECKING
 
 if TYPE_CHECKING:
     from redis.asyncio.client import Pipeline, Redis
 
 
-def from_url(url, **kwargs):
+def from_url(url: str, **kwargs: Any) -> "Redis":
     """
     Returns an active Redis client generated from the given database URL.