Add system for multi-runs

[SleepSoul]

Probably an option in the Select A Run menu to add multiple runs to a queue? pretty hard one.

[SleepSoul]

see https://discord.com/channels/523766637212598276/787779451865399368/1169761486239973427- new "multirun" dataType, then you just need the independent files and a driver file that imports them as you go. i vibe