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

.circleci/config.yml

@@ -299,6 +299,27 @@ jobs:
             ls
             python -m pytest -vv tests/local_testing/test_python_38.py
 
+  check_code_quality:
+    docker:
+      - image: cimg/python:3.11
+        auth:
+          username: ${DOCKERHUB_USERNAME}
+          password: ${DOCKERHUB_PASSWORD}
+    working_directory: ~/project/litellm
+
+    steps:
+      - checkout
+      - run:
+          name: Install Dependencies
+          command: |
+            python -m pip install --upgrade pip
+            pip install ruff
+            pip install pylint  
+            pip install .
+      - run: python -c "from litellm import *" || (echo '🚨 import failed, this means you introduced unprotected imports! 🚨'; exit 1)
+      - run: ruff check ./litellm
+    
+
   build_and_test:
     machine:
       image: ubuntu-2204:2023.10.1
@@ -806,6 +827,12 @@ workflows:
               only:
                 - main
                 - /litellm_.*/
+      - check_code_quality:
+          filters:
+            branches:
+              only:
+                - main
+                - /litellm_.*/
       - ui_endpoint_testing:
           filters:
             branches:
@@ -867,6 +894,7 @@ workflows:
             - installing_litellm_on_python
             - proxy_logging_guardrails_model_info_tests
             - proxy_pass_through_endpoint_tests
+            - check_code_quality
           filters:
             branches:
               only: