Add isort and ruff linter (#6575)

* Add isort and ruff linter

Both linters are pretty common among modern python code bases.

The isort tool provides stable sorting and grouping, as well as pruning
of unused imports.

Ruff is a modern linter, that is very fast due to being written in rust.
It can detect many common issues in a python codebase.

Removes the pylint dev requirement, since ruff replaces it.

* treewide: fix issues detected by ruff

* treewide: fix bare except clauses

* .devcontainer: Set up isort

* treewide: optimize imports

* treewide: apply black

* treewide: make regex patterns raw strings

This is necessary for escape sequences to be properly recognized.

frigate/comms/ws.py

@@ -3,10 +3,9 @@
 import json
 import logging
 import threading
-
 from typing import Callable
-
 from wsgiref.simple_server import make_server
+
 from ws4py.server.wsgirefserver import (
     WebSocketWSGIHandler,
     WebSocketWSGIRequestHandler,
@@ -18,7 +17,6 @@ from ws4py.websocket import WebSocket
 from frigate.comms.dispatcher import Communicator
 from frigate.config import FrigateConfig
 
-
 logger = logging.getLogger(__name__)
 
 
@@ -45,7 +43,7 @@ class WebSocketClient(Communicator):  # type: ignore[misc]
                         "topic": json_message.get("topic"),
                         "payload": json_message.get("payload"),
                     }
-                except Exception as e:
+                except Exception:
                     logger.warning(
                         f"Unable to parse websocket message as valid json: {message.data.decode('utf-8')}"
                     )
@@ -82,7 +80,7 @@ class WebSocketClient(Communicator):  # type: ignore[misc]
                     "payload": payload,
                 }
             )
-        except Exception as e:
+        except Exception:
             # if the payload can't be decoded don't relay to clients
             logger.debug(f"payload for {topic} wasn't text. Skipping...")
             return