Conditional injection

[KurbanismailovZaur]

It would be great to be able to set conditions for when bindings are triggered. For example, to specify that the binding should only work when embedded in the Enemy type, you can use the following code:

builder.AddScoped(_ => "Hello").When(injectContext => injectContext.TargetType == typeof(Enemy));

Bindings that have a When condition in the case where When returns true have a higher priority over other matching bindings.

[gustavopsantos]

This goes against Reflex core values, having a minimal dependency injection framework.