getDuaBook method
Implementation
Future<List<Book>> getDuaBook() async {
var quranDua = Book.fromJson(await jsonDecode(
await rootBundle.loadString('$assetPath/quran-dua.json')));
var dailyDua = Book.fromJson(await jsonDecode(
await rootBundle.loadString('$assetPath/prophet-dua.json')));
return [quranDua, dailyDua];
}