feat : persian calendar and date picker

lib/main.dart

@@ -42,15 +42,22 @@ class MyApp extends StatelessWidget {
     return GetMaterialApp(
       title: 'رصدیار',
       theme: ThemeData(
+        fontFamily: 'yekan',
         colorScheme: ColorScheme.fromSeed(seedColor: AppColor.blueNormal),
       ),
       initialRoute: AppPages.initRoutes,
       initialBinding: BindingsBuilder.put(() => UserService()),
       getPages: AppPages.pages,
-      locale: Locale('fa'),
+      locale: const Locale("fa", "IR"),
+      supportedLocales: const [
+        Locale("fa", "IR"),
+      ],
       localizationsDelegates: [
         PersianMaterialLocalizations.delegate,
         PersianCupertinoLocalizations.delegate,
+        GlobalMaterialLocalizations.delegate,
+        GlobalWidgetsLocalizations.delegate,
+        GlobalCupertinoLocalizations.delegate,
       ],
     );
   }