feat: platform page add

lib/src/platform_page.dart

@@ -0,0 +1,25 @@
+import 'package:flutter/cupertino.dart';
+import 'package:flutter/material.dart';
+import 'package:platform_ui/platform_ui.dart';
+
+class PlatformPage extends Page {
+  final Widget child;
+  final bool fullscreenDialog;
+  const PlatformPage({
+    required this.child,
+    this.fullscreenDialog = false,
+    super.key,
+    super.name,
+    super.arguments,
+    super.restorationId,
+  });
+
+  @override
+  Route createRoute(BuildContext context) {
+    return PlatformPageRoute(
+      builder: (context) => child,
+      fullscreenDialog: fullscreenDialog,
+      settings: this,
+    );
+  }
+}