Build lighting at runtime

When loading a simulation (and therefore some geometry) at runtime, the static lighting has to be rebuilt, however this is not a typical operation to do at runtime.
Either find a way to build the lighting at runtime or use dynamic lighting instead. (Dynamic lighting should not really be a problem as there is not a lot of complex lighting calculations going to happen)

No files, tests, or entry points are named. Start by locating the runtime simulation-loading path and the static-lighting setup, then determine whether lighting can be rebuilt at runtime or should use dynamic lighting; done means loaded simulations render with correct lighting without an impractical runtime operation.

Written by the indexing model from the issue text.