Fix issues reported by linter and add .flake8 file for config

Author: lukbrew25

.flake8

@@ -0,0 +1,3 @@
+[flake8]
+exclude = .git,__pycache__,build,dist,.venv,__init__.py
+extend-ignore = C901

src/easy_mongodb_auth_handler/auth.py

@@ -45,7 +45,6 @@ def __init__(self, mongo_uri, db_name, mail_info=None, blocking=True, readable_e
         self.blocking = blocking
         self.messages = get_messages(readable_errors)
 
-
     def _find_user(self, email):
         """
         Helper to find a user by email.

src/easy_mongodb_auth_handler/message.py

@@ -2,6 +2,7 @@
     Return message dictionary.
 """
 
+
 def get_messages(usr_readable):
     """
     Get message dictionary based on user readability preference.