Fix suffix NAL - 2/3

Currently tsMuxer does not detect suffix nals (non VCL nals placed after the VCL nals in the nal unit).
Therefore these nals are placed first in the TS PES, before the AUD or next frame nal.

This patch fixes the above.

tsMuxer/hevcStreamReader.h

@@ -31,6 +31,7 @@ protected:
     void onSplitEvent() override { m_firstFileFrame = true; }
 private:
     bool isSlice(int nalType) const;
+    bool isSuffix(int nalType) const;
     void incTimings();
     int toFullPicOrder(HevcSliceHeader* slice, int pic_bits);
     void storeBuffer(MemoryBlock& dst, const uint8_t* data, const uint8_t* dataEnd);