feat(add-on): add ElysiaJS + Eden Treaty

Which project does this relate to?

Create TanStack App

Describe the feature

There are already a lot of great add-ons available for Create TanStack App, and I’d love to see first-class support for ElysiaJS and Eden Treaty added as well. 🩵

ElysiaJS is a fast, TypeScript-first web framework that pairs especially well with the TanStack ecosystem. Eden Treaty provides end-to-end type safety and autocomplete when consuming an Elysia server, making the combination a great fit for full-stack TanStack applications.

An add-on could provide a ready-to-use ElysiaJS backend alongside the TanStack Start frontend, with Eden Treaty configured for type-safe API communication out of the box.

Additional context

Eden Treaty is the recommended client for Elysia's type-safe API experience and provides typed API access directly from the Elysia server definition.

Commencez par examiner les modules complémentaires existants de Create TanStack App, puis consultez la documentation liée d’ElysiaJS et d’Eden Treaty. Définissez comment un backend ElysiaJS et un client Eden Treaty doivent être générés aux côtés du frontend TanStack Start. La tâche est terminée lorsque le module complémentaire fournit cette configuration prête à l’emploi et type-safe.