docs: integration examples — 4 example projects

[sepehr-safari]

Summary

Creates 4 standalone integration example projects in examples/:

1. simple-trace/ — Parse a trace, detect failures, generate a Markdown report
2. simple-csms/ — CSMS mock: validate messages, detect failures
3. simulator-output/ — Process JSONL trace, generate HTML report
4. ci-example/ — GitHub Actions workflow with ocpp-debugkit ci

Each example is self-contained (not part of pnpm workspace), has its own package.json, README, and synthetic sample data.

Also adds ESLint ignore for examples/ directory and links to examples from root README.

Closes #89

Checklist

• examples/simple-trace/ — runnable, parses + detects + reports
• examples/simple-csms/ — runnable, validates + detects
• examples/simulator-output/ — runnable, JSONL + HTML report
• examples/ci-example/ — GitHub Actions workflow + scenario files
• All trace data is synthetic
• Each example has a README with run instructions
• examples/ is not part of the pnpm workspace (standalone projects)
• Root README updated with link to examples
• No changeset needed (examples are not published package content)
• Lint, format check pass