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/record/cleanup.py

@@ -5,12 +5,12 @@ import itertools
 import logging
 import os
 import threading
+from multiprocessing.synchronize import Event as MpEvent
 from pathlib import Path
 
 from peewee import DoesNotExist
-from multiprocessing.synchronize import Event as MpEvent
 
-from frigate.config import RetainModeEnum, FrigateConfig
+from frigate.config import FrigateConfig, RetainModeEnum
 from frigate.const import RECORD_DIR, SECONDS_IN_DAY
 from frigate.models import Event, Recordings, Timeline
 from frigate.record.util import remove_empty_directories
@@ -225,7 +225,7 @@ class RecordingCleanup(threading.Thread):
 
         recordings_to_delete = []
         for recording in recordings.objects().iterator():
-            if not recording.path in files_on_disk:
+            if recording.path not in files_on_disk:
                 recordings_to_delete.append(recording.id)
 
         logger.debug(
@@ -247,7 +247,7 @@ class RecordingCleanup(threading.Thread):
         # Expire tmp clips every minute, recordings and clean directories every hour.
         for counter in itertools.cycle(range(self.config.record.expire_interval)):
             if self.stop_event.wait(60):
-                logger.info(f"Exiting recording cleanup...")
+                logger.info("Exiting recording cleanup...")
                 break
             self.clean_tmp_clips()