feat: Implement major features and fix theming bug

This commit introduces several new features and a critical bug fix.

- Implemented a full "Quick Pay" flow for both within and outside the bank, including IFSC validation, beneficiary verification, and a TPIN-based payment process.
- Added a date range filter to the Account Statement screen and streamlined the UI by removing the amount filters.
- Fixed a major bug that prevented dynamic theme changes from being applied. The app now correctly switches between color themes.
- Refactored and improved beneficiary management, transaction models, and the fund transfer flow to support NEFT/RTGS.

lib/features/profile/preferences/color_theme_dialog.dart

@@ -20,22 +20,22 @@ class ColorThemeDialog extends StatelessWidget {
             Navigator.pop(context);
           },
         ),
-        // ListTile(
-        //   leading: const CircleAvatar(backgroundColor: Colors.green),
-        //   title: const Text('Green'),
-        //   onTap: () {
-        //     context.read<ThemeCubit>().changeTheme(ThemeType.green);
-        //     Navigator.pop(context);
-        //   },
-        // ),
-        // ListTile(
-        //   leading: const CircleAvatar(backgroundColor: Colors.orange),
-        //   title: const Text('Orange'),
-        //   onTap: () {
-        //     context.read<ThemeCubit>().changeTheme(ThemeType.orange);
-        //     Navigator.pop(context);
-        //   },
-        // ),
+        ListTile(
+          leading: const CircleAvatar(backgroundColor: Colors.green),
+          title: const Text('Green'),
+          onTap: () {
+            context.read<ThemeCubit>().changeTheme(ThemeType.green);
+            Navigator.pop(context);
+          },
+        ),
+        ListTile(
+          leading: const CircleAvatar(backgroundColor: Colors.orange),
+          title: const Text('Orange'),
+          onTap: () {
+            context.read<ThemeCubit>().changeTheme(ThemeType.orange);
+            Navigator.pop(context);
+          },
+        ),
         ListTile(
           leading: const CircleAvatar(backgroundColor: Colors.blue),
           title: Text(AppLocalizations.of(context).blue),
@@ -48,4 +48,3 @@ class ColorThemeDialog extends StatelessWidget {
     );
   }
 }
-