Common: Add MinizipHelpers (RAM and UTF-8 compatible fopen)

src/common/minizip_helpers.h

@@ -0,0 +1,9 @@
+#pragma once
+#include "unzip.h"
+
+namespace MinizipHelpers {
+
+unzFile OpenUnzMemoryFile(const void* memory, size_t memory_size);
+unzFile OpenUnzFile(const char* filename);
+
+} // namespace MinizipHelpers