* feat: 🎸 Create string formats component * Add missing copyright headers * fix: 🐛 change to readonly ✅ Closes: https://hashicorp.atlassian.net/browse/ICU-18458
* feat: 🎸 Create string formats component * Add missing copyright headers * fix: 🐛 change to readonly ✅ Closes: https://hashicorp.atlassian.net/browse/ICU-18458