add ruff format, ruff check, time_picker, project structure and imports reorganized

router.py

@@ -0,0 +1,32 @@
+from functools import wraps
+from typing import Callable, overload
+from .model.descriptors import BotCommand, Command, CommandCallbackContext
+
+
+class Router:
+    def __init__(self):
+        self._commands = dict[str, BotCommand]()
+
+    @overload
+    def command(self, command: Command): ...
+
+    @overload
+    def command(self, command: str, caption: str | dict[str, str] | None = None): ...
+
+    def command(
+        self, command: str | Command, caption: str | dict[str, str] | None = None
+    ):
+        def decorator(func: Callable[[CommandCallbackContext], None]):
+            if isinstance(command, str):
+                cmd = BotCommand(name=command, handler=func, caption=caption)
+            else:
+                cmd = BotCommand(handler=func, **command.__dict__)
+            self._commands[cmd.name] = cmd
+
+            @wraps(func)
+            def wrapper(*args, **kwargs):
+                return func(*args, **kwargs)
+
+            return wrapper
+
+        return decorator