added about dialog

app/lib/features/about/data/repositories/package_info_repository.dart

@@ -0,0 +1,9 @@
+import 'package:package_info_plus/package_info_plus.dart';
+import 'package:riverpod_annotation/riverpod_annotation.dart';
+
+part 'package_info_repository.g.dart';
+
+@Riverpod(keepAlive: true)
+Future<PackageInfo> packageInfo(PackageInfoRef ref) {
+  return PackageInfo.fromPlatform();
+}

app/lib/features/about/data/repositories/package_info_repository.g.dart

@@ -0,0 +1,24 @@
+// GENERATED CODE - DO NOT MODIFY BY HAND
+
+part of 'package_info_repository.dart';
+
+// **************************************************************************
+// RiverpodGenerator
+// **************************************************************************
+
+String _$packageInfoHash() => r'f7bd90882137aac7a9f28e9d10eae6efeee8c9d0';
+
+/// See also [packageInfo].
+@ProviderFor(packageInfo)
+final packageInfoProvider = FutureProvider<PackageInfo>.internal(
+  packageInfo,
+  name: r'packageInfoProvider',
+  debugGetCreateSourceHash:
+      const bool.fromEnvironment('dart.vm.product') ? null : _$packageInfoHash,
+  dependencies: null,
+  allTransitiveDependencies: null,
+);
+
+typedef PackageInfoRef = FutureProviderRef<PackageInfo>;
+// ignore_for_file: type=lint
+// ignore_for_file: subtype_of_sealed_class, invalid_use_of_internal_member, invalid_use_of_visible_for_testing_member