Added the skeleton structure necessary to publish doc using Antora

Currently, documentation is scattered in various platforms(tools) i.e readme, wiki, project landing page and asciidoc. To streamline documentation, this task aims to consolidate the relevant content from the various sources into asciidoc and have docs as code which will be easier to create, update, version control and so on.

This task creates the initial structure necessary to publish asciidoc files using Antora static site generator.