Includes side effects:
- No longer need to restart app for user agent string change to take effect
- parseAs extension function requires a Json instance in the calling context, which doesn't necessarily need to be the default one provided by Injekt
To keep the commit from being 100+ files the interactors wasn't moved.
The domain module like the data module uses `tachiyomi` instead of `eu.kanade.tachiyomi` for package names
