`export * as` doesnt gets ignored

[royAmmerschuber]

With two files

///--- a.ts ---
interface Foo{
    bar:string
}

///--- b.ts ---
export * as Bar from "./a"

if I run

npx ts-json-schema-generator -p b.ts

Then it outputs an empty schema without any definitions.

I would expect it to expose the type Bar.Foo.

[Arthur Fiorette]

Hi! Thanks for opening this PR.

Would you like to work on a PR? Remember to add unit tests :)