Correct exports; add some file serialization; fix service base object serialization

src/core/file_sys/archive_sdmcwriteonly.cpp

@@ -39,6 +39,8 @@ public:
         static constexpr u64 IPCDelayNanoseconds(269082);
         return IPCDelayNanoseconds;
     }
+
+    SERIALIZE_DELAY_GENERATOR
 };
 
 ResultVal<std::unique_ptr<FileBackend>> SDMCWriteOnlyArchive::OpenFile(const Path& path,
@@ -100,3 +102,5 @@ ResultVal<ArchiveFormatInfo> ArchiveFactory_SDMCWriteOnly::GetFormatInfo(const P
 }
 
 } // namespace FileSys
+
+SERIALIZE_EXPORT_IMPL(FileSys::SDMCWriteOnlyDelayGenerator)