Consider selecting step interval times in the multiworld YAML

[airbreather]

From the Discord thread:

ploki122: I think that step speed should be part of the YAML?
[...]
fore772: having it be in the yaml but still modifiable in client would be neat too, idk how reasonable that is. qol more than anything

fore772: similar to some settings in BRC or doom

It could probably be something like a checkbox in the menu. "Overwrite step interval? Y/N" --> N = use what the server demanded, Y = the menu we have now

[airbreather]

Discussing with @skidznet, we realistically don't think this should happen:

1. The intervals already get saved between runs, so in the majority of cases, you shouldn't have to regularly change them.
2. If there's a need for saving, like, different settings presets for different groups, then that's a valid reason to want this, but it would be a separate request that goes beyond this (and doesn't necessarily need to involve the YAML).
3. It's not very clear how we would make it easy (enough) to override, since the settings menu comes BEFORE you connect to the server and get the YAML-supplied settings anyway.