Possibility to support "Node IndexedAccessType"

```ts
export interface ICharacter {
id: string;
username: string;
}

export interface ICreateCharacterArguments {
username: ICharacter['username'];
};
```

Currently generating from this file fails with following error
`Error: Node IndexedAccessType not supported by ts-interface-builder: ICharacter['username']`

EDIT: Additional context on this type https://www.typescriptlang.org/docs/handbook/2/indexed-access-types.html