LibWeb: Enforce Content Security Policy on Fetch requests

Author: https://github.com/Lubrsi
Commit: 6f771f45e2
Pull-request: https://github.com/LadybirdBrowser/ladybird/pull/3972

Libraries/LibWeb/ContentSecurityPolicy/BlockingAlgorithms.h

@@ -0,0 +1,15 @@
+/*
+ * Copyright (c) 2025, Luke Wilde <luke@ladybird.org>
+ *
+ * SPDX-License-Identifier: BSD-2-Clause
+ */
+
+#pragma once
+
+#include <LibWeb/ContentSecurityPolicy/Directives/Directive.h>
+
+namespace Web::ContentSecurityPolicy {
+
+[[nodiscard]] Directives::Directive::Result should_request_be_blocked_by_content_security_policy(JS::Realm&, GC::Ref<Fetch::Infrastructure::Request>);
+
+}