[Core] Implement Events

[Lecrapouille]

rate random X days

# DISASTER / EMERGENCY HOOKS
#
# These are intentionally events rather than continuous simulation rules.
# =============================================================================

events

    event Fire
        affects FireHazard
        creates FireAgent
    end

    event Earthquake
        affects [
            Buildings
            Roads
            Utilities
            Water
            Power
        ]
    end

    event Tornado
        affects [
            Buildings
            Roads
            Traffic
        ]
    end

    event Meteor
        affects [
            Buildings
            Pollution
            FireHazard
        ]
    end

    event NuclearAccident
        affects [
            Radiation
            Health
            GroundPollution
            WaterPollution
        ]
    end

end```