Added webview

lib/screens/webview/provider/webview.provider.dart

@@ -0,0 +1,33 @@
+import 'package:riverpod_annotation/riverpod_annotation.dart';
+import 'package:webview_flutter/webview_flutter.dart';
+
+import 'package:my_linkding/screens/webview/model/webview.model.dart';
+
+part 'webview.provider.g.dart';
+
+@riverpod
+class WebView extends _$WebView {
+  @override
+  WebViewModel build() {
+    return WebViewModel(
+      webViewController: WebViewController(
+        onPermissionRequest: (request) => request.deny(),
+      )
+        ..setJavaScriptMode(JavaScriptMode.unrestricted)
+        ..setNavigationDelegate(
+          NavigationDelegate(
+            onProgress: (int progress) {
+              // Update loading bar.
+            },
+            onPageStarted: (String url) {},
+            onPageFinished: (String url) {},
+            onWebResourceError: (WebResourceError error) {},
+          ),
+        ),
+    );
+  }
+
+  void initialize(String url) {
+    state.webViewController.loadRequest(Uri.parse(url));
+  }
+}