Add supporting.md Guide to Simplify Assimilation & Navigation of Documentation Files and Codes

[0xdfinity]

Description:

This PR introduces a new supporting.md file in the root of the repository, serving as a comprehensive, structured guide to navigate the ZAMA source files. The guide is designed to help both developers and non-technical users explore the repo's content in a logical, educational sequence, reducing the need for manual digging through nested folders and resources

Key features of supporting.md:

• Mirrors the main sections of the ZAMA Manual (High-Level Overview, Developers, Operators, etc).
• Provides overviews, key file links (clickable to GitHub blobs), learning paths, and transitions for progressive knowledge building.
• Includes tips for different audiences and additional repo navigation advice.
• Creating a centralized, easy-to-follow map of the docs.

This addition enhances accessibility without altering existing files build process. It can be linked from any root README.md in a future update if desired.

Checklist:

• Added new file: supporting.md to the awesome zama root directory.
• Verified all links in supporting.md are clickable and point to the correct GitHub blob URLs
• Ensured the structure is psychologically and educationally sound: Starts with basics, builds progressively, and includes tips for assimilation.
• Followed Markdown best practices: Consistent headings, bullet points, and formatting for readability.
• No changes to existing files; this is a pure addition.
• Tested locally: Rendered the Markdown in a viewer (e.g., GitHub preview) to confirm no broken links or formatting issues.
• Note in root README.md linking to supporting.md