enh/refac: read aloud audio queue

src/lib/stores/index.ts

@@ -68,6 +68,8 @@ export const banners: Writable<Banner[]> = writable([]);
 
 export const settings: Writable<Settings> = writable({});
 
+export const audioQueue = writable(null);
+
 export const showSidebar = writable(false);
 export const showSearch = writable(false);
 export const showSettings = writable(false);