Add CLI arguments processing documentation

Add CLI arguments processing documentation

A new document has been added that details the process of command-line arguments processing. It provides information on commands, subcommands, options and parameters, and how they function. A breakdown of example command is provided for a better understanding of the process. Addition of this document helps in providing clarity for any user engaging with the application. Furthermore, it was moved from the 'index.org' to a new stand-alone document in order to improve the document structure and readability.