feat: Implement Windows runner for Flutter application

- Added FlutterWindow class to manage the Flutter view within a Win32 window.
- Created main entry point in main.cpp to initialize and run the Flutter application.
- Implemented utility functions for console attachment and command line argument parsing.
- Added resource management for application icon and manifest.
- Enhanced Win32Window class for DPI awareness and theme management.
- Included necessary headers and resource files for building the Windows runner.

lib/utils/time_ago_extensions.dart

@@ -0,0 +1,25 @@
+import 'package:flutter/widgets.dart';
+import '../l10n/app_localizations.dart';
+
+/// Extension to provide localized "time ago" formatting
+extension TimeAgoExtension on Duration {
+  /// Get localized time ago string
+  String toLocalizedTimeAgo(BuildContext context) {
+    final l10n = AppLocalizations.of(context)!;
+
+    if (inMinutes < 1) return l10n.justNow;
+    if (inMinutes < 60) return l10n.minutesAgo(inMinutes);
+    if (inHours < 24) return l10n.hoursAgo(inHours);
+    return l10n.daysAgo(inDays);
+  }
+
+  /// Get localized time ago string with seconds support
+  String toLocalizedTimeAgoWithSeconds(BuildContext context) {
+    final l10n = AppLocalizations.of(context)!;
+
+    if (inSeconds < 60) return l10n.secondsAgo(inSeconds);
+    if (inMinutes < 60) return l10n.minutesAgo(inMinutes);
+    if (inHours < 24) return l10n.hoursAgo(inHours);
+    return l10n.daysAgo(inDays);
+  }
+}