Add more code examples to documentation

[ibrahimcesar]

Description

Expand the documentation with more real-world code examples.

Examples Needed

CLI Tools

• Simple CLI with argument tracking
• Multi-command CLI (like git)
• Interactive CLI with prompts

Libraries

• Library with optional telemetry
• Workspace with multiple crates

Web Services

• REST API with Axum
• GraphQL server
• gRPC service

Real-world Patterns

• Feature flag tracking
• Error rate monitoring
• Performance tracking
• User journey tracking

How to Contribute

1. Pick an example type
2. Create a working example in examples/
3. Add documentation explaining the pattern
4. Submit a PR

This is a great first contribution!

Each example can be a separate PR. No Rust expertise required for documentation improvements.