Create a setup.sh Script for One-Command Installation

📝 Description

EduAid currently requires multiple manual steps for installation and setup. This issue proposes creating a new setup.sh script in the root directory that automates the entire installation process with a single command.

🎯 Goal

Provide an easy-to-use installation script that sets up all dependencies, environments, and services required to run EduAid.

✅ Proposed Solution

The new setup.sh script should:

1. Check and install dependencies (Node.js, Python, npm, curl, tar, etc.).
2. Create and activate a virtual environment for the backend.
3. Install backend dependencies using pip install -r requirements.txt.
4. Download and extract the Sense2Vec model if not already present.
5. Install frontend dependencies for the web app and extension (npm install).
6. Ensure a smooth developer experience with minimal manual intervention.