Allow starting script from the middle

[The-Intelligent-One]

Preparation

• [X] No one has asked for this feature before in other issues (even the closed ones)

Describe the feature

Sometimes FGO crashes and I end up in the middle of a half-automated battle, having to either try and follow the script manually or just fighting normally, and probably much slower than what it would've took the beat the battle. For these instances at least, it'd be great if I could start a script not necessarily from the first step, but like the 3rd step of the second turn or something. I feel like this probably could have other uses too, but I haven't come up with anything, so it's only a gut feeling