Http Gateway Layer

[skdhitman]

@shubhamphepale , please refer to these res. for reference.

Reference resources:

1. https://www.journaldev.com/7148/java-httpurlconnection-example-java-http-request-get-post
2. POST Req: https://stackoverflow.com/questions/4205980/java-sending-http-parameters-via-post-method-easily
3. https://www.admfactory.com/getpost-request-with-httpurlconnection-in-java/
4. https://www.tutorialandexample.com/httpurlconnection/
5. https://www.baeldung.com/java-http-request