random loadout support (#11027)

Content.Server/Clothing/Components/LoadoutComponent.cs

@@ -1,12 +1,16 @@
 using Content.Shared.Roles;
-using Robust.Shared.Serialization.TypeSerializers.Implementations.Custom.Prototype;
+using Robust.Shared.Serialization.TypeSerializers.Implementations.Custom.Prototype.List;
 
 namespace Content.Server.Clothing.Components
 {
     [RegisterComponent]
     public sealed class LoadoutComponent : Component
     {
-        [DataField("prototype", required: true, customTypeSerializer: typeof(PrototypeIdSerializer<StartingGearPrototype>))]
-        public string Prototype = string.Empty;
+        /// <summary>
+        /// A list of starting gears, of which one will be given.
+        /// All elements are weighted the same in the list.
+        /// </summary>
+        [DataField("prototypes", required: true, customTypeSerializer: typeof(PrototypeIdListSerializer<StartingGearPrototype>))]
+        public List<string>? Prototypes;
     }
 }