trait_alias should impl for trait objects too.

[Leoyzen]

// crate: facade
// we define some facade interfaces here
pub trait GenericInterface: Any + Send + Sync;
// or using nightly trait alias
pub trait GenericInterface = Any + Send + Sync;

pub trait SomeInterface: GenericInterface;


// crate: service
pub struct Service {}
impl Component for Service {
    type Interface = Box<dyn GenericInterface>;
    ...
}


// crate: application
// we use shaku here to organize module and code
use shaku::Interface;
// but we can't using GenericInterface here because shaku::Interface only impl for those size type (T) not object trait.
impl shaku::Interface for dyn GenericInterface {}

the Interface and other defs should be impl for trait object itself too.

// implement for all T
impl<T: Any + Send + Sync> Interface for T {}

// implement for all trait object
impl Interface for dyn Any + Send + Sync {}