chore(app): обновление flutter и пакетов (#38)

* chore(pubspec,di): Обновить версии SDK и исправить использование AppEnv

* chore(readme): Обновить версии Flutter и Dart, добавить новые библиотеки

---------

Co-authored-by: petrovyuri <petrovyuri@example.com>

lib/app/app.dart

@@ -10,7 +10,6 @@ import 'package:friflex_starter/features/error/error_screen.dart';
 import 'package:friflex_starter/features/splash/splash_screen.dart';
 import 'package:friflex_starter/features/update/domain/state/cubit/update_cubit.dart';
 import 'package:friflex_starter/features/update/update_routes.dart';
-import 'package:friflex_starter/features/update/update_type.dart';
 import 'package:friflex_starter/l10n/gen/app_localizations.dart';
 import 'package:friflex_starter/l10n/localization_notifier.dart';
 import 'package:go_router/go_router.dart';
@@ -124,7 +123,7 @@ class _App extends StatelessWidget {
       child: BlocConsumer<UpdateCubit, UpdateState>(
         listener: (context, state) {
           if (state is UpdateSuccessState &&
-              state.updateInfo.updateType == UpdateType.hard &&
+              state.updateInfo.updateType == .hard &&
               context.mounted) {
             router.goNamed(UpdateRoutes.hardUpdateScreenName);
           }

lib/app/app_config/app_config.dart

@@ -41,7 +41,7 @@ class AppConfigDev implements IAppConfig {
   AppConfigDev();
 
   @override
-  AppEnv get env => AppEnv.dev;
+  AppEnv get env => .dev;
 
   @override
   String get name => 'AppConfigDev';
@@ -67,7 +67,7 @@ class AppConfigProd implements IAppConfig {
   AppConfigProd();
 
   @override
-  AppEnv get env => AppEnv.prod;
+  AppEnv get env => .prod;
 
   @override
   String get name => 'AppConfigProd';
@@ -93,7 +93,7 @@ class AppConfigStage implements IAppConfig {
   AppConfigStage();
 
   @override
-  AppEnv get env => AppEnv.stage;
+  AppEnv get env => .stage;
 
   @override
   String get name => 'AppConfigStage';

lib/app/theme/app_colors_scheme.dart

@@ -50,7 +50,7 @@ class AppColors extends ThemeExtension<AppColors> with _$AppColorsTailorMixin {
     testColor: Colors.red,
     errorSnackbarBackground: Color(0xFFD24720),
     successSnackbarBackground: Color(0xFF6FB62C),
-    infoSnackbarBackground: Color.fromARGB(255, 220, 108, 77),
+    infoSnackbarBackground: .fromARGB(255, 220, 108, 77),
     itemTextColor: Color(0xFFFAF3EB),
   );
 
@@ -59,7 +59,7 @@ class AppColors extends ThemeExtension<AppColors> with _$AppColorsTailorMixin {
     testColor: Colors.green,
     errorSnackbarBackground: Color(0xFF638B8B),
     successSnackbarBackground: Color(0xFF93C499),
-    infoSnackbarBackground: Color.fromARGB(255, 35, 147, 178),
+    infoSnackbarBackground: .fromARGB(255, 35, 147, 178),
     itemTextColor: Colors.white,
   );
 }

lib/app/ui_kit/app_snackbar.dart

@@ -63,7 +63,7 @@ class AppSnackBar extends StatefulWidget {
     _show(
       context: context,
       message: message,
-      type: TypeSnackBar.error,
+      type: .error,
       displayDuration: displayDuration,
     );
   }
@@ -81,7 +81,7 @@ class AppSnackBar extends StatefulWidget {
     _show(
       context: context,
       message: message,
-      type: TypeSnackBar.info,
+      type: .info,
       displayDuration: displayDuration,
     );
   }
@@ -99,7 +99,7 @@ class AppSnackBar extends StatefulWidget {
     _show(
       context: context,
       message: message,
-      type: TypeSnackBar.success,
+      type: .success,
       displayDuration: displayDuration,
     );
   }
@@ -266,9 +266,9 @@ class _AppSnackBarState extends State<AppSnackBar>
   /// [TypeSnackBar.error] - цвет ошибки
   Color _getBackgroundColor(TypeSnackBar type) {
     return switch (type) {
-      TypeSnackBar.success => context.appColors.successSnackbarBackground,
-      TypeSnackBar.error => context.appColors.errorSnackbarBackground,
-      TypeSnackBar.info => context.appColors.infoSnackbarBackground,
+      .success => context.appColors.successSnackbarBackground,
+      .error => context.appColors.errorSnackbarBackground,
+      .info => context.appColors.infoSnackbarBackground,
     };
   }
 }
@@ -290,17 +290,17 @@ class _Icon extends StatelessWidget {
   @override
   Widget build(BuildContext context) {
     return switch (type) {
-      TypeSnackBar.success => const Icon(
+      .success => const Icon(
         Icons.check_circle,
         color: Colors.white,
         size: 32,
       ),
-      TypeSnackBar.error => const Icon(
+      .error => const Icon(
         Icons.error,
         color: Colors.white,
         size: 32,
       ),
-      TypeSnackBar.info => const Icon(
+      .info => const Icon(
         Icons.info,
         color: Colors.white,
         size: 32,