Improve documentation and link blog post

[jonathanpopham]

Summary

The repo README and docs need improvement to help users get started and understand the tool better.

TODO

• Improve README with clearer setup instructions, usage examples, and configuration options
• Link the blog post about dead code detection
• Add example output / screenshots showing what the action produces
• Document supported languages (14+ via Supermodel API — not C#)

[coderabbitai]

🔗 Related PRs

#9 - refactor: consume /v1/analysis/dead-code API endpoint [closed]

---

📝 Issue Planner

_{Check the box below or use the @coderabbitai plan command to generate an implementation plan and prompts that you can use with your favorite coding assistant.}

• Create Plan

---

🧪 Issue enrichment is currently in open beta.

To disable automatic issue enrichment, add the following to your .coderabbit.yaml:

issue_enrichment:
  auto_enrich:
    enabled: false

💬 Have feedback or questions? Drop into our discord!