some fixup to playgo , makes Worms go further

src/core/file_format/playgo_chunk.cpp

@@ -0,0 +1,16 @@
+// SPDX-FileCopyrightText: Copyright 2024 shadPS4 Emulator Project
+// SPDX-License-Identifier: GPL-2.0-or-later
+
+#include "common/io_file.h"
+
+#include "playgo_chunk.h"
+
+bool PlaygoChunk::Open(const std::filesystem::path& filepath) {
+    Common::FS::IOFile file(filepath, Common::FS::FileAccessMode::Read);
+    if (!file.IsOpen()) {
+        return false;
+    }
+    file.Read(playgoHeader);
+
+    return true;
+}

src/core/file_format/playgo_chunk.h

@@ -0,0 +1,31 @@
+// SPDX-FileCopyrightText: Copyright 2024 shadPS4 Emulator Project
+// SPDX-License-Identifier: GPL-2.0-or-later
+
+#pragma once
+#include <filesystem>
+#include "common/types.h"
+
+struct PlaygoHeader {
+    u32 magic;
+
+    u16 version_major;
+    u16 version_minor;
+    u16 image_count;
+    u16 chunk_count;
+    u16 mchunk_count;
+    u16 scenario_count;
+    // TODO fill the rest
+};
+class PlaygoChunk {
+public:
+    PlaygoChunk() = default;
+    ~PlaygoChunk() = default;
+
+    bool Open(const std::filesystem::path& filepath);
+    PlaygoHeader GetPlaygoHeader() {
+        return playgoHeader;
+    }
+
+private:
+    PlaygoHeader playgoHeader;
+};