Added webview

lib/screens/webview/ui/webview.dart

@@ -0,0 +1,31 @@
+import 'package:flutter/material.dart';
+import 'package:flutter_riverpod/flutter_riverpod.dart';
+
+import 'package:my_linkding/models/data/bookmarks.dart';
+import 'package:my_linkding/screens/webview/provider/webview.provider.dart';
+import 'package:webview_flutter/webview_flutter.dart';
+
+class WebView extends ConsumerWidget {
+  final Bookmark bookmark;
+
+  const WebView({
+    Key? key,
+    required this.bookmark,
+  }) : super(key: key);
+
+  @override
+  Widget build(BuildContext context, WidgetRef ref) {
+    WidgetsBinding.instance.addPostFrameCallback((_) {
+      ref.read(webViewProvider.notifier).initialize(bookmark.url!);
+    });
+
+    final webViewController = ref.watch(webViewProvider).webViewController;
+
+    return Scaffold(
+      appBar: AppBar(
+        title: Text(bookmark.title != "" ? bookmark.title! : bookmark.websiteTitle!),
+      ),
+      body: webViewController != null ? WebViewWidget(controller: ref.watch(webViewProvider).webViewController!) : null,
+    );
+  }
+}