LibWebView+WebContent: Implement basic DevTools console support

Author: https://github.com/trflynn89
Commit: ffdce78b7b
Pull-request: https://github.com/LadybirdBrowser/ladybird/pull/3801
Reviewed-by: https://github.com/AtkinsSJ

Libraries/LibWebView/ConsoleOutput.cpp

@@ -0,0 +1,29 @@
+/*
+ * Copyright (c) 2025, Tim Flynn <trflynn89@ladybird.org>
+ *
+ * SPDX-License-Identifier: BSD-2-Clause
+ */
+
+#include <LibIPC/Decoder.h>
+#include <LibIPC/Encoder.h>
+#include <LibWebView/ConsoleOutput.h>
+
+template<>
+ErrorOr<void> IPC::encode(Encoder& encoder, WebView::ConsoleOutput const& console_output)
+{
+    TRY(encoder.encode(console_output.level));
+    TRY(encoder.encode(console_output.timestamp));
+    TRY(encoder.encode(console_output.arguments));
+
+    return {};
+}
+
+template<>
+ErrorOr<WebView::ConsoleOutput> IPC::decode(Decoder& decoder)
+{
+    auto level = TRY(decoder.decode<JS::Console::LogLevel>());
+    auto timestamp = TRY(decoder.decode<UnixDateTime>());
+    auto arguments = TRY(decoder.decode<Vector<JsonValue>>());
+
+    return WebView::ConsoleOutput { level, timestamp, move(arguments) };
+}