Add a CONTRIBUTING.md

* Description

Create Contributors Guideline to help new Contributors get started with this Project.

* Additional Details

Add a CONTRIBUTING.md to allow new users to get started with knowing how to contribute.
Add Screenshots wherever possible.
Add the basic information about creating Issues, Pull Requests and Branching.
Mention tutorials related to Git and Github to help them better understand.
You can use the content on the Notion Workspace as a reference for the Tutorial Links.

Start with the requested CONTRIBUTING.md and use the Notion Workspace as the reference for Git and GitHub tutorial links. Confirm the guide covers creating issues, pull requests, branching, and screenshots where useful; done means a new contributor can follow it to get started with the project.

Written by the indexing model from the issue text.