f2eb8ff51f
* ATOM-16237 Using setting registry to RPI system settings Changes include: - Remove RHISystemDesriptor since the pre-registered draw list tag is not needed. - Remove EitorContext which was for system component settings. - Add atom_rpi.setreg file - Add getting RPISystemDescriptor from setting registry. Signed-off-by: qingtao <qingtao@amazon.com>