Vending Machines (#296)

* Vending Machines

* addressed review

Content.Shared/VendingMachines/VendingMachineInventoryPrototype.cs

@@ -0,0 +1,41 @@
+using Robust.Shared.Prototypes;
+using Robust.Shared.Serialization;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+using YamlDotNet.RepresentationModel;
+
+namespace Content.Shared.VendingMachines
+{
+    [Serializable, NetSerializable, Prototype("vendingMachineInventory")]
+    public class VendingMachineInventoryPrototype : IPrototype, IIndexedPrototype
+    {
+        private string _id;
+        private string _name;
+        private string _description;
+        private double _animationDuration;
+        private string _spriteName;
+        private Dictionary<string, uint> _startingInventory;
+
+        public string ID => _id;
+        public string Name => _name;
+        public string Description => _description;
+        public double AnimationDuration => _animationDuration;
+        public string SpriteName => _spriteName;
+        public Dictionary<string, uint> StartingInventory => _startingInventory;
+
+        public void LoadFrom(YamlMappingNode mapping)
+        {
+            var serializer = YamlObjectSerializer.NewReader(mapping);
+
+            serializer.DataField(ref _id, "id", string.Empty);
+            serializer.DataField(ref _name, "name", string.Empty);
+            serializer.DataField(ref _description, "description", string.Empty);
+            serializer.DataField<double>(ref _animationDuration, "animationDuration", 0);
+            serializer.DataField(ref _spriteName, "spriteName", string.Empty);
+            serializer.DataField(ref _startingInventory, "startingInventory", new Dictionary<string, uint>());
+        }
+    }
+}