Add overload definitions for transfunction decorator

Author: Евгений Блинов

transfunctions/decorators/transfunction.py

@@ -1,12 +1,22 @@
 from inspect import currentframe
 from types import FrameType
-from typing import Union, cast
+from typing import Union, cast, overload
 
 from transfunctions.transformer import FunctionTransformer
 from transfunctions.typing import Callable, FunctionParams, ReturnType
 
 
+@overload
+def transfunction(function: Callable[FunctionParams, ReturnType]) -> FunctionTransformer[FunctionParams, ReturnType]: ...
+
+
+@overload
 def transfunction(
+    *, check_decorators: bool = True,
+) -> Callable[[Callable[FunctionParams, ReturnType]], FunctionTransformer[FunctionParams, ReturnType]]: ...
+
+
+def transfunction(  # type: ignore[misc]
     *args: Callable[FunctionParams, ReturnType], check_decorators: bool = True,
 ) -> Union[Callable[[Callable[FunctionParams, ReturnType]], FunctionTransformer[FunctionParams, ReturnType]], FunctionTransformer[FunctionParams, ReturnType]]:
     frame = currentframe()