`hasQuestionToken` of Anonymous Type

Like https://github.com/dsherret/ts-morph/issues/559, but for an Anonymous Type:

```ts
if (type.isAnonymous()) {
type.getApparentProperties().map(prop => {
// prop.hasQuestionToken() ?
});
}
```

Start with the type.isAnonymous() and getApparentProperties() entry points shown in the issue, then compare the requested behavior with the related issue #559. Done means anonymous-type apparent properties expose the requested hasQuestionToken() behavior, with tests covering the result.

Written by the indexing model from the issue text.