Fix: Add missing requirements.txt

[sonal-jakhar]

Summary

This PR fixes the setup issue caused by the missing requirements.txt file referenced in both README.md and CONTRIBUTING.md.

Since the file was not present in the repository, running the documented installation command:

pip install -r requirements.txt

resulted in a "No such file or directory" error, preventing contributors from completing the project setup.

Changes Made

• Added a root-level requirements.txt file.
• Included the required Python dependencies used by the project:
  • Flask
  • Flask-CORS
  • requests
  • python-dotenv
  • gunicorn
• Ensured the documented setup process now works as intended.

Testing

• ✅ Verified that pip install -r requirements.txt installs the required dependencies successfully.
• ✅ Verified that the Flask backend starts successfully after installation.

Screenshots

Before

• pip install -r requirements.txt failed because the file was missing.

After

• Dependencies installed successfully using pip install -r requirements.txt.
• Backend started successfully without dependency-related issues.

Fixes #235