Ultra HDR is a true HDR image format, and is backcompatible. libultrahdr is the reference codec for the Ultra HDR format. The codecs that support the format can render the HDR intent of the image on HDR displays; other codecs can still decode and display the SDR intent of the image.
If opengl is enabled, then add egl and glesv3 libraries in to Libs.Private list for static linking
also minor documentation updates in sample app and clang-formatting
Test: Build