libSceSystemLogger2Game technical debt

libSceSystemLogger2Game additional exports - these name/NID pairs are present in the 13.60 export inventory. Parameter lists, return types and behavior are unverified. Parameterless int declarations are import-resolution placeholders, not verified ABI prototypes; every entry throws through NotImplemented_nid_no_patch. No runtime functionality is implemented.

Name	NID
`sceSystemLogger2GameGetTimestamp`	`ZNlFA5YKy4A`
`sceSystemLogger2GameSetEvent`	`AAqtvm0YEss`