Enhance README with professional design

[RAprogramm]

Objective

Make README more professional with improved design and navigation.

Changes Needed

1. Add Logo and Header

• Use images/materror.png as centered header image
• Add centered title and badges
• Add link to Russian version

2. Table of Contents

Add comprehensive ToC with sections:

• Overview
• Highlights
• Workspace Crates
• Feature Flags
• Installation
• Benchmarks
• Code Coverage
• Quick Start
• Advanced Usage (with subsections)
• Resources
• Metrics
• License

3. Navigation Buttons

• Add "Go to top" button at the end of each major section
• Use images/masterror_go_to_top.png image
• Link back to Table of Contents

4. Section Icons

• Add emoji icons to section headers (🚀, ✨, 📦, etc.)
• Make headers more visually distinct

Files to Update

• README.template.md
• README.md (auto-generated via build script)
• README.ru.md (apply same improvements)

Implementation

Apply changes to template, then run cargo build to regenerate README files.