feat: settings version display, complete shortcut list, Ctrl fine zoom (v1.7.0)

lib/screens/viewer_screen.dart

@@ -16,6 +16,8 @@ import '../shortcuts/app_shortcuts.dart';
 import '../services/window_persistence.dart';
 import '../l10n/app_localizations.dart';
 
+const appVersion = '1.7.0';
+
 class ViewerScreen extends StatefulWidget {
   final List<String> initialFiles;
   const ViewerScreen({super.key, this.initialFiles = const []});
@@ -132,7 +134,8 @@ class _ViewerScreenState extends State<ViewerScreen> with WindowListener {
                   },
                 ),
                 const Divider(color: Colors.white24, height: 24),
-                const Text('imajViewer', style: TextStyle(color: Colors.white, fontSize: 15)),
+                Text('imajViewer $appVersion',
+                    style: const TextStyle(color: Colors.white, fontSize: 15)),
                 const SizedBox(height: 4),
                 Text(
                   AppLocalizations.of(context)!.appDescription,