add allowUrls and denyUrls for Flutter

docs/platforms/flutter/configuration/filtering.mdx

@@ -65,6 +65,28 @@ When a string or a non-error object is raised, Sentry creates a synthetic except
 
 <PlatformContent includePath="configuration/breadcrumb-hints" />
 
+#### Using `allowUrls` (Web only)
+
+Based on the URL, you can narrow down whether events should be sent to Sentry.
+Using `allowUrls`, events are only sent if the URL matches the pattern specified in `allowUrls`.
+`allowUrls` accepts regular expressions.
+
+If used on a platform other than Web, this setting will be ignored.
+
+<PlatformContent includePath="configuration/allow-urls" />
+
+#### Using `denyUrls` (Web only)
+
+You can exclude events sent to Sentry based on the URL.
+Using `denyUrls`, events are ignored if the URL matches the pattern specified in `denyUrls`.
+`denyUrls` accepts regular expressions.
+
+When used in combination with `allowUrls`, you can block specific subdomains of the domains listed in `allowUrls`.
+
+If used on a platform other than Web, this setting will be ignored.
+
+<PlatformContent includePath="configuration/deny-urls" />
+
 ## Filtering Transaction Events
 
 To prevent certain transactions from being reported to Sentry, use the <PlatformIdentifier name="traces-sampler" /> or <PlatformIdentifier name="before-send-transaction" /> configuration option, which allows you to provide a function to evaluate the current transaction and drop it if it's not one you want.

platform-includes/configuration/allow-urls/dart.mdx

@@ -0,0 +1,13 @@
+```dart
+import 'package:sentry/sentry.dart';
+
+Future<void> main() async {
+  await Sentry.init(
+    (options) {
+      options.dsn = '___PUBLIC_DSN___';
+      options.allowUrls = ["^https://sentry.com.*\$", "my-custom-domain"];
+    },
+    appRunner: initApp, // Init your App.
+  );
+}
+```

platform-includes/configuration/deny-urls/dart.mdx

@@ -0,0 +1,13 @@
+```dart
+import 'package:sentry/sentry.dart';
+
+Future<void> main() async {
+  await Sentry.init(
+    (options) {
+      options.dsn = '___PUBLIC_DSN___';
+      options.denyUrls = ["^.*ends-with-this\$", "denied-url"];
+    },
+    appRunner: initApp, // Init your App.
+  );
+}
+```