Address spotless lint errors (#1138)

* Add spotless (with ktlint)

* Run spotlessApply

* screaming case screaming case screaming case

* Update PagerViewerAdapter.kt

* Update ReaderTransitionView.kt

app/src/main/java/eu/kanade/domain/ui/UiPreferences.kt

@@ -19,7 +19,11 @@ class UiPreferences(
 
     fun appTheme() = preferenceStore.getEnum(
         "pref_app_theme",
-        if (DeviceUtil.isDynamicColorAvailable) { AppTheme.MONET } else { AppTheme.DEFAULT },
+        if (DeviceUtil.isDynamicColorAvailable) {
+            AppTheme.MONET
+        } else {
+            AppTheme.DEFAULT
+        },
     )
 
     fun themeDarkAmoled() = preferenceStore.getBoolean("pref_theme_dark_amoled_key", false)