Feature request: autosave

[x-qq]

Having the game create autosaves something like every 1000 (or maybe even every 100) turns could make finding various bugs in the game and in scenarios easier ("where did I get this special item that I am not supposed to have?" for one example).

So I think we could have an autosave directory, with filenames like

(timestamp)-(some unique id derived from party member names - first name letters?)-(scenario name)-(stepxyz).sav

EDIT 1
It would probably be beneficial to include some identifier of the openboe build that created the savefile in the filename - perhaps the git commit hash that's used at the title screen.

[clort81]

the party name doesn't really need to be unique - if it does though, creation timestamp would be an option.

I'd like the player to be able to see what party it is, maybe with first two letters of each name? JeThFrAdFeMi for default party, for e.g.