add jetson hardware decoder

orbbec_camera/src/jpeg_decoder.cpp

@@ -0,0 +1,8 @@
+
+#include <orbbec_camera/jpeg_decoder.h>
+
+namespace orbbec_camera {
+JPEGDecoder::JPEGDecoder(int width, int height) : width_(width), height_(height) {}
+JPEGDecoder::~JPEGDecoder() {}
+
+}  // namespace orbbec_camera