[MAINTENANCE] lint files using ruff

[shpiyu]

Description

Trying out a new linting tool called ruff - https://docs.astral.sh/ruff/ - this PR includes two things:

1. linting issues fixable by ruff across all code
2. code formatting and linting in formatters module (to keep PR short and easy to review other modules will be formatted in other PRs)

Changes Made

Basic linting fixes automatically done by ruff check --fix and code formatting of 'formatters' module

Definition of Done

Before submitting this pull request, please ensure that the following criteria have been met:

• All automated tests have passed successfully.
• All manual tests have passed successfully.
• Code has been reviewed by at least one other team member.
• Code has been properly documented and commented as needed.
• All new and existing code adheres to our project's coding standards.
• All dependencies have been added or removed from the project's README or other documentation as needed.
• Any relevant documentation or help files have been updated to reflect the changes made in this pull request.
• Any necessary database migrations have been run.
• Any relevant UI changes have been reviewed and approved by the UI/UX team.