CamX RawHdr Feature Enable
RawHdr feature介绍： 试用于拍照场景，输入3张Raw，输出一张Raw。
对应的pipeline: camxSWMFMergeRaw.xml (usecases: UsecaseZSL)
featureGraph: RTRawHDRBayer2YUVJPEG
RT -> RawHdr -> Bayer2Yuv -> JPEG
RTRawHDRBayer2YUVJPEGFeatureGraphDescriptor 声明路径：chifeature2oemgraphdescriptors.cpp
/// @brief Definitions of static data describing the RTRawHDRBayer2YUVJPEGFeatureGraphextern const ChiFeature2Desc
