Select City/Country and Adding Notification Screen

**Describe the bug**
The Select City/Country screen first has only the option to select a country titled "city", and only option "India" available other countries are not available for selection, and the option is displayed 25 times,
and the notification button has no redirect screen

**To Reproduce**
Steps to reproduce the behavior:
1. Go to 'screen\login\select_city_screen.dart' and 'screen\home\main_tab_screen.dart'
2. Click on 'select_city_screen.dart' and 'main_tab_screen.dart'
3. Scroll down to 'lines: 21, 63, 124, 142' in select_city_screen.dart and 'lines: 215' in main_tab_screen.dart
4. See error

**Expected behavior**
Add the title as "Select country" (line 21) and "Search your country" (line 63), add other country and city names for selection (line 124), reduce the count for displaying from 25 to 1 (line 142).
(Add a "notifications.dart" file) for the notification button should redirect to a notification page in app.

**Screenshots**
attached

**Desktop (please complete the following information):**
- OS: [Windows 11]
- Browser[Firefox]
- Version [131.0.2]

**Smartphone (please complete the following information):**
- Device: [Redmi Note 10 Pro]
- OS: [MIUI]
- OS Version: [13.0.10]
- Browser [Firefox]
- Browser Version [131.0.2]

**Additional context**
Add any other context about the problem here.
Making basic changes and adding "city-country" for selection option, with names for some extra cities and countries.
and added a "notifications.dart" file for the notification button to redirect to