Need error message when a residential geojson isn't in a residential project #512
Description
Is your feature request related to a problem? Please describe
If I make a ghe project, and copy in my ghe feature file (which happens to have residnetial buildings included), we error during the run command. The "resources" dir is required for residential buildings, and it rightfully isn't included when creating a ghe project.
The solution you'd like
An error message when running, instead of crashing to a stack trace.
Alternatives you've considered
We could theoretically check when creating a scenario file, but that could also be provided custom by the user. A graceful error message instead of a crash is preferable.
Additional context
The error is raised at this line, so somewhere before that is a good time to check for existence of that dir.