Add silent start for desktop

lib/features/common/window/window_controller.dart

@@ -0,0 +1,54 @@
+import 'package:flutter/material.dart';
+import 'package:hiddify/core/prefs/prefs.dart';
+import 'package:hiddify/utils/utils.dart';
+import 'package:riverpod_annotation/riverpod_annotation.dart';
+import 'package:window_manager/window_manager.dart';
+
+part 'window_controller.g.dart';
+
+// TODO improve
+@Riverpod(keepAlive: true)
+class WindowController extends _$WindowController
+    with WindowListener, AppLogger {
+  @override
+  Future<bool> build() async {
+    await windowManager.ensureInitialized();
+    const windowOptions = WindowOptions(
+      size: Size(868, 768),
+      minimumSize: Size(868, 648),
+      center: true,
+    );
+    await windowManager.setPreventClose(true);
+    await windowManager.waitUntilReadyToShow(
+      windowOptions,
+      () async {
+        if (ref.read(prefsControllerProvider).general.silentStart) {
+          loggy.debug("silent start is enabled, hiding window");
+          await windowManager.hide();
+        }
+      },
+    );
+    windowManager.addListener(this);
+
+    ref.onDispose(() {
+      loggy.debug("disposing");
+      windowManager.removeListener(this);
+    });
+    return windowManager.isVisible();
+  }
+
+  Future<void> show() async {
+    await windowManager.show();
+    state = const AsyncData(true);
+  }
+
+  Future<void> hide() async {
+    await windowManager.close();
+  }
+
+  @override
+  Future<void> onWindowClose() async {
+    await windowManager.hide();
+    state = const AsyncData(false);
+  }
+}