Multiple save slots

First and foremost consider this:

• Only RetroArch bugs should be filed here. Not core bugs or game bugs
• This is not a forum or a help section, this is strictly developer oriented

Description

Apologies if this has already been brought up. I did search for a while and couldn't find anything. RA already has a pretty extensive save state manager. I'm proposing that this is extended to saves as well. This would allow for easy management of multiple saves in games that do not natively support multiple save files (e.g. Pokemon) without having to use messy workarounds like manually renaming/switching out files or making multiple copies of the same game.

Expected behavior

All the functionality relating to save states should be extended to saves as well, including multiple slots, hotkeys for switching between slots, etc. Ideally there is also some way to choose which save slot to load when launching the game. The ability to manually name these saves (so they're not just numbers) would also be a great addition.

Actual behavior

Saves are limited to a single file. There is some semi-equivalent support for the functionality I'm looking for in that states by their nature also backup and restore save data, but this feature should be available independently of states.

Steps to reproduce the bug

N/A

Bisect Results

N/A

Version/Commit

You can find this information under Information/System Information

• RetroArch: 1.15.0

Environment information

• OS: All
• Compiler: N/A

No source file, test, or entry point is identified in the issue. Start by mapping the existing save-state manager and normal save-file handling, then define how multiple slots, switching hotkeys, launch-time selection, and manual names should work. Done requires an agreed design and implementation covering the requested save-slot behavior independently of save states.