This function is part of the PlayerDataStorage Interface.
Get the file name of the file this request is for. OutStringLength will always be set to the string length of the file name if it is not NULL.
EOS_Success if the file name was successfully written to OutFilenameBuffer, a failure result otherwise
|Parameter Type And Name||Usage Information|
|uint32_t FilenameStringBufferSizeBytes||The maximum number of bytes that can be written to OutStringBuffer|
|char* OutStringBuffer||The buffer to write the NULL-terminated utf8 file name into, if successful|
|int32_t* OutStringLength||How long the file name is (not including null terminator)|