Add ManyToOne relation filtering in PanacheEntityResource

[gmuellerinform]

Description

Consider the following typical setup:

@Entity
public class Application extends PanacheEntityBase {

    @Id
    public Long id;

 ...
}

@Entity
public class ApplicationRole extends PanacheEntityBase {

    @Id
    public Long id;

    @ManyToOne(fetch = FetchType.LAZY)
    @NotNull
    public Application application;

...
}

public interface ApplicationRoles extends PanacheEntityResource<ApplicationRole, Long> {

}

For may use cases it would like to call /application-roles?application=2

This would be a great addition and is much easier than #28450

Thanks a lot!

Implementation ideas

No response

[quarkus-bot]

/cc @FroMage (panache), @Sgitario (rest-data-panache), @loicmathieu (panache)

[gmuellerinform]

Hi! Any news on this? It would be really useful!