Testing Guide

This chapter explains :

1. How testing was done for this project.
   1. It explains the core principles (unit tests, integration tests, no_std tests, Documentation Tests)
   2. It explains the Tools used : (rust test framework)
2. How to perform the tests on this project.
3. How to extend the tests if you intend to cotribute to the project.

The following sub-chapters explain the above highlights in detail [undone]