Dependencies aren't currently type-checked

[freshgum-bubbles]

Currently, the parameters of a class aren't type-checked against its dependencies.

Consider the following:

@Service([AnotherService])
export class MyService {
  constructor (private randomValue: number) { }
}

It's a clear error, but it still compiles.
This is because currently, TypeDI does not read the constructor's arguments.
Instead, the arguments are typed as any[].

I believe I've found a workaround for this; a PR can be expected soon.