Isolation protocol: Timer and map updates

[John-Candlebury]

Summary

Mods "Isolation protocol: Increase danger timer and remove sealed hallways from the mapgen pool."

Purpose of change

Small tweaks to make the mod less punishing. The firebreak specifically was a common run ender since it couldnt be bypassed with standard skills in the time assigned for each level.

Describe the solution

Simple json work on the timer EOC and mutable mapgen definition for the levels.

Testing

Loaded the mod.