Add option for extra save slots

This request is for the option to create additional save slots beyond the default 3.

By default, Ocarina of Time has 3 save slots saved to one save file.

The file select menu could have more than the default 3 files, files 4, 5 & 6 could just save as a separate 3-file save file in another save folder, which would still being compatible for converting back to an srm file for use on original hardware. Every 4th save file created, would just make a new 3-file rom save, so save slots 1-3, 4-6, 7-9, 10-12 etc, would just be their own separate save file, each in their own folder.

This way the player can have more than the 3 default game save slots to choose from, without the need to manually go into the saves folder and back their saves up to allow for additional game saves to be created. It would also keep the save format intact for converting back to SRM files for use with original hardware or emulators as it doesn't add more than 3 save slots internally to the actual save file.

The file select menu has files 1-3, copy, erase and options. My suggestion would be to add a "New File" option to the menu below file 3, to add files beyond the default 3.

This option should also be able to be toggled off in the SoH menu, for those who want to keep the vanilla file select.