This moves the banners to the root composable and so eliminates the need to
track the app states in every screen.
(cherry picked from commit d97eab03283ea8b686ffa007bfc69224348b24f1)
# Conflicts:
# app/src/main/java/eu/kanade/presentation/more/MoreScreen.kt
# app/src/main/java/eu/kanade/tachiyomi/ui/browse/BrowseTab.kt
# app/src/main/java/eu/kanade/tachiyomi/ui/browse/source/browse/BrowseSourceScreen.kt
# app/src/main/java/eu/kanade/tachiyomi/ui/browse/source/browse/BrowseSourceScreenModel.kt
# app/src/main/java/eu/kanade/tachiyomi/ui/library/LibraryScreenModel.kt
# app/src/main/java/eu/kanade/tachiyomi/ui/main/MainActivity.kt
# app/src/main/java/eu/kanade/tachiyomi/ui/manga/MangaScreenModel.kt