DOCS UPDATE: Enhance README with visual GIFs and improved navigation (PR ready)

### Is this related to an existing part of the documentation?

- [x] Yes, it is related to an existing section

### What needs to be updated?

## 📌 Current Documentation Issue

The current README is informative but primarily text-based, which can make it less engaging for first-time visitors and potential contributors. Additionally, long documentation without quick navigation back to the top can slightly affect readability and overall user experience.

## ✨ Proposed Changes

- Added relevant and lightweight GIFs at suitable sections of the README to visually represent the project flow and improve engagement.
- Ensured that all existing content and structure remain unchanged.
- Added a **Back to Top** navigation link at the bottom of the README to improve usability for readers.
- Focused on enhancing clarity, attractiveness, and contributor-friendliness without introducing any functional or code-level changes.

## 📋 Additional Context

- The changes are documentation-only and safe to merge.
- A pull request has already been prepared with these updates.
- These improvements aim to make the repository more welcoming, especially for new contributors and open-source program reviewers.

### Relevant Documentation Link (if any)

_No response_

### Record

- [x] I agree to follow this project's Code of Conduct
- [x] I want to work on this update