Implementation of Swagger API for better testing.

[Saksham1005]

Description

Swagger API will help expose all the routes on a single URL. Thus helping developers to quickly test the APIs developed, that too on the browser itself.
Attaching the screenshot of a sample.

Screenshots

Checklist

• I have checked the existing issues
• I have read the [Contributing Guidelines]
• I have read the discussion tab thoroughly and got the project idea
• I am willing to work on this issue (optional)
• I am a GSSoC'23 contributor

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