This function is part of the PlayerDataStorage Interface.
Get the count of files we have previously queried information for and files we have previously read from / written to.
EOS_EResult::EOS_Success if the input was valid, otherwise an error result explaining what went wrong
|Parameter Type And Name||Usage Information|
|const EOS_PlayerDataStorage_GetFileMetadataCountOptions* GetFileMetadataCountOptions||Object containing properties related to which user is requesting the metadata count|
|int32_t* OutFileMetadataCount||If successful, the count of metadata currently cached|