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/auth/controllers/theme_state.dart

@@ -1,27 +1,17 @@
 import 'package:equatable/equatable.dart';
+import 'package:flutter/material.dart';
 import 'package:kmobile/config/theme_type.dart';
 import 'package:kmobile/config/themes.dart';
 
+class ThemeState extends Equatable {
+  final ThemeType themeType;
 
-abstract class ThemeState extends Equatable {
-  getThemeData();
-  @override
-  List<Object?> get props => [];
-}
+  const ThemeState({required this.themeType});
 
-class ThemeBlue extends ThemeState {
-  
-  @override
-  getThemeData() {
-    print('returning blue theme');
-    return AppThemes.getLightTheme(ThemeType.blue);
+  ThemeData getThemeData() {
+    return AppThemes.getLightTheme(themeType);
   }
-}
 
-class ThemeViolet extends ThemeState {
   @override
-  getThemeData() {
-    print('returning violet theme');
-    return AppThemes.getLightTheme(ThemeType.violet);
-  }
-}
+  List<Object?> get props => [themeType];
+}