Update docs

[0x3639]

Update docs with the help of Claude 4.

[Copilot]

Pull Request Overview

This PR massively expands and restructures the README to provide a comprehensive guide for the Zenon CLI tool, including installation, build instructions, global options, a Table of Contents, detailed command references, best practices, and support information.

• Added a detailed Table of Contents and reorganized sections for easier navigation.
• Updated installation and build-from-source instructions with clearer steps and updated repository links.
• Expanded command summaries, full command reference, tips, error handling, and support sections.

Comments suppressed due to low confidence (2)

README.md:5

• The Table of Contents currently stops before the 'Tips and Best Practices', 'Error Handling', and 'Support' sections. Please add entries for these sections to the TOC to ensure they are easily discoverable.

## Table of Contents

README.md:31

• [nitpick] The term 'keyStore' is inconsistently capitalized in other parts of the document. Consider standardizing the casing (e.g., 'keystore') throughout the README for consistency.

**Important:** All required dynamic libraries are included in the `build/` folder. When moving the `znn-cli` binary, ensure you also move the accompanying libraries.