Try to make @InjectViewState optional

[NotPerfectBlue]

add @Inherited annotation to @InjectViewState and annotate MvpPresenter. It makes all instances of MvpPresenter annotated.

[aasitnikov]

Hello! Thanks for your contribution!

I tested the changes in a new project - it really seems like annotation processor can pick up classes, that are not annotated themselves, but have a parent with an annotation. If so, it perfectly applies to Moxy presenters. We evaluated ways to make @InjectViewState optional, but never thought it would be so simple!

Overall changes are good, but could you also add a test, that checks that viewstate is being generated without explicit @InjectViewState on presenter? You can check out ViewTestKt for reference, some check like compilation.generatedSourceFiles().any { it.name.contains("${"$$"}State") } will be sufficient.