Fix injection when using generics

[AlexDochioiu]

Currently, dagger-reflect doesn't work with injectors interfaces relying on generics, such as:

interface Injector<T> {
    fun inject(instance: T)
}

@Component
interface MainActivityComponent : Injector<MainActivity>

This PR would fix this issue.

[AlexDochioiu]

Haven't tried it but this might also fix #202