Model level scope: include is not supported in LB4

Nadie ha tomado este issue todavía.

### Describe the bug

In Loopback 3 it was possible to add a scope and include in model annotations on a model class :

`@model({
settings: {
strict: false,
scope: {
include: [
{relation: 'posts'}
]
}
})
`
If you do the same in LB4 an error is thrown that the relation cannot be found as loopback-datasource-juggler does not support LB4 includes.

I have made changes to support model level includes here:

https://github.com/SilexConsulting/loopback-next/tree/support-default-scope-include

I need some help to get this ready to submit a pull request.

### Logs

_No response_

### Additional information

_No response_

### Reproduction

https://github.com/SilexConsulting/loopback-next/tree/support-default-scope-include

Comienza revisando la rama support-default-scope-include y su reproducción en el repositorio de LoopBack 4 enlazado, centrándote en las anotaciones del modelo y en el manejo de includes por parte de loopback-datasource-juggler. Confirma que el scope include a nivel de modelo ya no genera un error relation-not-found y que el comportamiento reproducido funciona como se espera.

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