Resources are materials that are used and stored in the simulation. Resources are measured in kg.
The resources.xml configuration file contains configuration for all the resources used in the simulation.
A "resource" element has a unique "name" attribute.
It has a required "phase" attribute that represents the phase of matter which it is stored and used in the simulation. Possible values are "solid", "liquid" and "gas".
It has a required "life-support" attribute represents if the resource is used for life support purposes or not. Possible values are "true" and "false".