add sentry widget

flutter/lib/src/sentry_flutter.dart

@@ -33,6 +33,9 @@ typedef FlutterOptionsConfiguration = FutureOr<void> Function(
 mixin SentryFlutter {
   static const _channel = MethodChannel('sentry_flutter');
 
+  @internal
+  static SentryFlutterOptions flutterOptions = SentryFlutterOptions();
+
   static Future<void> init(
     FlutterOptionsConfiguration optionsConfiguration, {
     AppRunner? appRunner,
@@ -96,6 +99,8 @@ mixin SentryFlutter {
       // ignore: invalid_use_of_internal_member
       SentryNativeProfilerFactory.attachTo(Sentry.currentHub, _native!);
     }
+
+    SentryFlutter.flutterOptions = flutterOptions;
   }
 
   static Future<void> _initDefaultValues(

flutter/lib/src/sentry_widget.dart

@@ -0,0 +1,39 @@
+import 'package:flutter/cupertino.dart';
+import '../sentry_flutter.dart';
+
+/// A central widget that contains the Sentry widgets.
+class SentryWidget extends StatefulWidget {
+  const SentryWidget({super.key, required this.child});
+
+  final Widget child;
+
+  @override
+  _SentryWidgetState createState() => _SentryWidgetState();
+}
+
+class _SentryWidgetState extends State<SentryWidget> {
+  final _options = SentryFlutter.flutterOptions;
+
+  @override
+  Widget build(BuildContext context) {
+    Widget content = widget.child;
+    content = _maybeWrapScreenshotWidget(content);
+    content = _maybeWrapUserInteractionWidget(content);
+    return content;
+  }
+
+  Widget _maybeWrapScreenshotWidget(Widget child) {
+    if (_options.attachScreenshot) {
+      return SentryScreenshotWidget(child: child);
+    }
+    return child;
+  }
+
+  Widget _maybeWrapUserInteractionWidget(Widget child) {
+    if (_options.enableUserInteractionTracing ||
+        _options.enableUserInteractionBreadcrumbs) {
+      return SentryUserInteractionWidget(child: child);
+    }
+    return child;
+  }
+}