Add swagger doc for REST API

[ashokponkumar]

Required actions:

1. Create Swagger doc
2. Create endpoint to host swagger doc

[ashokponkumar]

@swati-nair Do let us know if you need more information on this.

[swati-nair]

Sure @ashokponkumar, thank you! I have started working on it and I am using go-swagger to generate the swagger doc.

[HarikrishnanBalagopal]

Useful links:

• https://swagger.io/docs/specification/2-0/what-is-swagger/
• https://github.com/OAI/OpenAPI-Specification/blob/master/versions/2.0.md
• https://github.com/go-swagger/go-swagger
• https://medium.com/@pedram.esmaeeli/generate-swagger-specification-from-go-source-code-648615f7b9d9