SaveDataCheck: Preliminary work in this archive.

This allows Steel Diver to boot further, some files are needed.

This is still not ready and needs a big cleanup, this will possibly be delayed until the way we handle archives is fixed (with factory classes instead of ahead-of-time creation of archives)

src/core/hle/service/fs/archive.h

@@ -22,6 +22,7 @@ enum class ArchiveIdCode : u32 {
     SystemSaveData      = 0x00000008,
     SDMC                = 0x00000009,
     SDMCWriteOnly       = 0x0000000A,
+    SaveDataCheck       = 0x2345678A,
 };
 
 typedef u64 ArchiveHandle;