fix: include return type hinting

Co-authored-by: Sophia <41456914+i0bs@users.noreply.github.com>
Signed-off-by: LordOfPolls <dev@lordofpolls.com>

interactions/models/internal/extension.py

@@ -151,7 +151,7 @@ def listeners(self) -> List["Listener"]:
         """Get the listeners from this Extension."""
         return self._listeners
 
-    def load(self, *args, **kwargs):
+    def load(self, *args, **kwargs) -> Callable[[], ...]:
         """Run on extension load"""
         ...