Register a guest test for each library and build it from the library's
CMakeLists.txt, so the two libraries are built and registered like the
other libraries that ship a CMakeLists.txt. The tests call every export
and require the NotImplemented_nid_no_patch throw, so none of them can
return a made-up success or write the caller's buffers.
AI-assisted: yes
Add boilerplate stubs for libSceAt9Enc, libSceAudiodecCpu, libSceAudiodecCpuHevag,
libSceM4aacEnc, libSceSulpha, libSceCamera, and libSceDepth2, each exporting its
known NIDs via NotImplemented_nid_no_patch. Include debt documentation with
sysmodule IDs and (where available) orbital-derived signatures.
Add sceSystemServiceShowDisplaySafeAreaSettings as a silent success stub and
document it under Silent stubs.
AI-assisted: yes