restructured preferences

src/lib/utility/use-state.ts

@@ -1,12 +1,7 @@
-import { podcast_preferences } from '$lib/preferences';
+import { user_preferences } from '$lib/preferences';
 import { podcast_progress } from '$lib/progress';
 
-export function save_podcast_state() {
-	podcast_progress.save();
-	podcast_preferences.save();
-}
-
 export function load_podcast_state() {
 	podcast_progress.load();
-	podcast_preferences.load();
+	user_preferences.load();
 }