Adds additional CI checks for the backend and frontend, to complement pre-commit hooks which should already be run

src/setup.cfg

@@ -1,5 +1,9 @@
-[pycodestyle]
-exclude = migrations, paperless/settings.py, .tox, */tests/*
+[flake8]
+extend-exclude = */migrations/*, paperless/settings.py, */tests/*
+# E203 - https://www.flake8rules.com/rules/E203.html
+# W503 - https://www.flake8rules.com/rules/W503.html
+ignore = E203,W503
+max-line-length = 88
 
 [tool:pytest]
 DJANGO_SETTINGS_MODULE=paperless.settings
@@ -7,7 +11,6 @@ addopts = --pythonwarnings=all --cov --cov-report=html -n auto
 env =
   PAPERLESS_DISABLE_DBHANDLER=true
 
-
 [coverage:run]
 source =
   ./