Reefer load and indicator light fix 1.41.x

This changes the trailer type to reefer only and properly enables the reefer running light for the following loads using owned & standalone reefers:

Beverages
Butter
Cheese
Food
Frozen Food
Frozen Fruit
Frozen Vegetables
Fruits
Ice Cream
Meat
Milk
Nuts
Potatoes (still allows for hopper to use for farm bulk hauls)
Vegetables
Yogurt