Captcha Feature added

[badaya12]

Description

I have added the feature of Robot verification via Recaptcha.It is v3 enterprise version that works in the background and removes the need of features that has to added for disability or linguistically barriers.

Related Issues

Feature Request: Add Robot Verification #1102

Steps to Test

First You have to generate secret key and site key from this ,then :-

1. first replace YOUR_SITE_KEY in index.html in frontend
2. Then Replace YOUR_SITE_KEY in frontend/src/pages/login.jsx
3. Then in backend .env file has to updated with the SECRET_KEY

Screenshots (if applicable)

If your changes include visual updates, it would be helpful to provide screenshots of the before and after.

Checklist

• [YES ] I have tested these changes
• [ YES] I have updated the relevant documentation
• [YES ] I have commented my code, particularly in hard-to-understand areas
• [YES ] I have made corresponding changes to the codebase
• [YES ] My changes generate no new warnings or errors
• [ YES] The title of my pull request is clear and descriptive