Function writeUnsigned32

mgen-cpplib/src/main/cpp/mgen/serialization/VarInt.h:116–122

template<typename Stream>
inline void writeUnsigned32(unsigned int value, Stream& out) {
    while ((value & 0xFFFFFF80) != 0LL) {
        writeByte((value & 0x7F) | 0x80, out);
        value >>= 7;
    }
    writeByte(value & 0x7F, out);
}

template<typename Stream>
inline long long readSigned64(Stream& in) {