Feature: Runtime Execution Simulator

Name Pending.

Testing Lambda code can be difficult / unwieldy. While SAM exists for all supported languages, it is pretty limited in ergonomics, difficult to integrate with in CI, makes testing / infrastructure management unnecessarily complicated, and still requires further orchestration.

In an ideal world, we'd be able to "just" create a runtime with the corresponding service, add all the hooks, tracking, and tracing that we need, execute requests on top, and then verify the results, benchmark, get flamegraphs, etc, all without actually ever deploying, and all from a single `tokio::test`.

I have added a basic server in #1086, so this backlog issue is for extension / reuse of the implementation.

We should start from an internal implementation, and eventually publish a crate so that users can depend on it and integrate it in their CI.

Usa el servidor básico añadido en el issue #1086 como punto de entrada y, a continuación, revisa cómo podría ampliarse o reutilizarse para la ejecución local en runtime. Antes de implementar, aclara el primer hito interno y los criterios de aceptación, ya que el issue abarca actualmente hooks, tracing, ejecución de requests, benchmarking y la eventual publicación del crate.

Escrito por el modelo de indexación a partir del texto del issue.