fix: replace typing.NamedTuple with typing_extensions.NamedTuple to support multiple inheritance

src/snakia/core/es/subscriber.py

@@ -1,6 +1,8 @@
 from __future__ import annotations
 
-from typing import Generic, NamedTuple, TypeVar
+from typing import Generic, TypeVar
+
+from typing_extensions import NamedTuple
 
 from .event import Event
 from .filter import Filter

src/snakia/core/rx/base_bindable.py

@@ -1,4 +1,6 @@
-from typing import Generic, NamedTuple, Protocol, TypeVar
+from typing import Generic, Protocol, TypeVar
+
+from typing_extensions import NamedTuple
 
 T = TypeVar("T")
 R_co = TypeVar("R_co", covariant=True)