loadtest: load test the new registry

We have recently moved the Coder registry https://registry.coder.com to a new refactored one. We would like to load test it.

It could be as simple as including some modules in the load-testing template.

```tf
module "jetbrains_gateway" {
source = "registry.coder.com/modules/jetbrains-gateway/coder"
version = "1.0.25"
agent_id = coder_agent.example.id
agent_name = "example"
folder = "/home/coder/example"
jetbrains_ides = ["CL", "GO", "IU", "PY", "WS"]
default = "GO"
}
```

cc: @bcpeinhardt to coordinate with @f0ssel when this happens. We may need to keep an eye on the registry.
Ideally, we should have monitoring #182 and #137 before we do this.

Comienza con la plantilla de pruebas de carga y el ejemplo del módulo de registro del issue. Coordínate con @f0ssel y revisa los issues de monitorización #182 y #137 antes de ejecutar la prueba de carga; se considera terminado cuando se haya ejercitado el nuevo registro y se haya observado su comportamiento.

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