[CHORE] Listing New Improvements (For Open / Community Contribution)

[Nabhag8848]

List of Improvements For New Community Folks and Can Tackle Easily

• Improve Postman Collection to include fieldMappings and missing endpoints category wise, examples on how to use, documentation and including test in postman.
• Add Revert Examples Apps for Nodejs, Python, and Custom UI
• Revert Example App to test for Developers
• Contributing Guildelines to include Every Setup Guildeline right over there.

[rushil-b-patel]

How can one contribute to it..!
@Nabhag8848