style: ruff format and the lint rules of the driver standard

Mechanical: ruff format, and ruff check --fix with the rule set every NAPALM
driver uses (E, F, I, UP, B at line length 100). typing.List/Dict/Optional
become builtin generics and X | None, imports are sorted, the coding cookies
are gone. Two tests that read the source text follow the new spelling.

What ruff cannot fix comes in the next commit.

tests/test_channel.py

@@ -8,8 +8,6 @@ paramiko channel is faked, so the tests pin behaviour, not paramiko.
 
 from __future__ import annotations
 
-import socket
-
 import pytest
 
 from napalm_device_types.channel import (
@@ -56,7 +54,7 @@ class FakeChannel:
         if self.out:
             return self.out.pop(0)
         if self.hang:
-            raise socket.timeout()
+            raise TimeoutError()
         return b""
 
     def recv_stderr_ready(self):