[Documentation Update]: Adding screenshot of website in README.md and creating separate CONTRIBUTING.md file

[rashiranjan22]

The current state of the repository's documentation needs enhancement. The README.md file lacks a screenshot of the website, which would provide users with a visual insight into the project. Also some information about the website should be added.
Additionally, the contribution guidelines, currently mixed within the README.md, should be moved to a separate CONTRIBUTING.md file. This segregation would provide contributors with a clear statement of purpose and streamline the contribution process.

Kindly assign this issue to me under GSSOC'24

[rashiranjan22]

Kindly assign this issue to me under GSSOC'24

[143divya]

Can you please this issue to me under GssoC24?