Add the "Getting Started" docs for bitcoin example

[moven0831]

Description

This PR adds docs for the bitcoin example in the project. The primary focus is to assist developers in effectively running and understanding the bitcoin example. The changes include clear instructions for installation, compilation, and execution of the script.

Changes Made

• Formatted instructions into a step-by-step guide.
• Added detailed comments for steps in the script for better understanding.
• Provided the execution log as a reference for what to expect.

The PR should reduce the learning curve for new contributors and users of the project.