Litellm ruff linting enforcement (#5992)

* ci(config.yml): add a 'check_code_quality' step

Addresses https://github.com/BerriAI/litellm/issues/5991

* ci(config.yml): check why circle ci doesn't pick up this test

* ci(config.yml): fix to run 'check_code_quality' tests

* fix(__init__.py): fix unprotected import

* fix(__init__.py): don't remove unused imports

* build(ruff.toml): update ruff.toml to ignore unused imports

* fix: fix: ruff + pyright - fix linting + type-checking errors

* fix: fix linting errors

* fix(lago.py): fix module init error

* fix: fix linting errors

* ci(config.yml): cd into correct dir for checks

* fix(proxy_server.py): fix linting error

* fix(utils.py): fix bare except

causes ruff linting errors

* fix: ruff - fix remaining linting errors

* fix(clickhouse.py): use standard logging object

* fix(__init__.py): fix unprotected import

* fix: ruff - fix linting errors

* fix: fix linting errors

* ci(config.yml): cleanup code qa step (formatting handled in local_testing)

* fix(_health_endpoints.py): fix ruff linting errors

* ci(config.yml): just use ruff in check_code_quality pipeline for now

* build(custom_guardrail.py): include missing file

* style(embedding_handler.py): fix ruff check

tests/local_testing/test_custom_logger.py

@@ -296,7 +296,7 @@ async def test_async_custom_handler_completion():
                 messages=messages,
                 api_key="my-bad-key",
             )
-        except:
+        except Exception:
             pass
         assert (
             customHandler_failure.async_failure == True
@@ -352,7 +352,7 @@ async def test_async_custom_handler_embedding():
                 input=["hello world"],
                 api_key="my-bad-key",
             )
-        except:
+        except Exception:
             pass
         assert (
             customHandler_embedding.async_failure_embedding == True