Feature/formatting2

[amritpurshotam]

• Added .gitattributes file to force repo to always use LF line endings. On the feature/formatting-applied branch also ran git add --renormalize . to convert the existing CRLF to LF line endings. As an added measure also included a .editorconfig which is an editor agnostic configuration that tells it to use LF by default.
• Formatted python code with black and isort. Set VS Code to apply formatting changes on save in .vscode/settings.json and added CI checks in .circleci/config.yml
• Formatted front end with prettier