Ensure all surfaces provided when using compartmentalization infiltration

[shorowit]

Need to ensure that all adjacent surfaces are provided so that Aext can be defaulted correctly. OS-HPXML requires that every dwelling unit have a ceiling/roof, so we should be good there, but walls may be missing.

Perhaps we should throw warning (or error?) if no conditioned space walls adjacent to other MF space types. (Do so only if compartmentalization infiltration and Aext not provided?)

We should at a minimum update the docs.

[shorowit]

Note: Units could be stacked, in which case there would be no walls adjacent to other MF space types. So an error would be too strict.

[shorowit]

Let's check for at least one attached wall/ceiling/floor surface adjacent to one of four MF space types when the building type is SFA/MF. Throw an error if not found.