st/oxr: Add extension XR_FB_composition_layer_image_layout
Spec
According to the spec of XR_FB_composition_layer_image_layout, the struct XrCompositionLayerImageLayoutFB
will carry the flag of XrCompositionLayerImageLayoutFlagsFB
to define the image layout.
Usage
Application adds XrCompositionLayerImageLayoutFB
to the XrCompositionLayerBaseHeader::next
list and transfer to runtime client by xrEndFrame.
Edited by Hui Xu