ObjLoading: Add basis for IPakEntryReadStream to read ipak entries

src/ObjLoading/ObjContainer/IPak/IPakStreamManager.h

@@ -0,0 +1,25 @@
+#pragma once
+
+#include "Utils/FileAPI.h"
+#include <vector>
+#include <mutex>
+
+class IPakStreamManager
+{
+    FileAPI::IFile* m_file;
+    std::vector<FileAPI::IFile*> m_open_streams;
+    std::mutex m_read_mutex;
+    std::mutex m_stream_mutex;
+
+public:
+    explicit IPakStreamManager(FileAPI::IFile* file);
+    IPakStreamManager(const IPakStreamManager& other) = delete;
+    IPakStreamManager(IPakStreamManager&& other) noexcept = delete;
+    ~IPakStreamManager();
+
+    IPakStreamManager& operator=(const IPakStreamManager& other) = delete;
+    IPakStreamManager& operator=(IPakStreamManager&& other) noexcept = delete;
+
+    FileAPI::IFile* OpenStream(int64_t startPosition, size_t length);
+    void OnCloseStream(FileAPI::IFile* stream);
+};