Implement traits system (#10693)

Content.Shared/Traits/TraitPrototype.cs

@@ -0,0 +1,28 @@
+using Robust.Shared.Prototypes;
+using static Robust.Shared.Prototypes.EntityPrototype; // don't worry about it
+
+namespace Content.Shared.Traits
+{
+    /// <summary>
+    ///     Describes a trait.
+    /// </summary>
+    [Prototype("trait")]
+    public sealed class TraitPrototype : IPrototype
+    {
+        [ViewVariables]
+        [IdDataField]
+        public string ID { get; } = default!;
+
+        /// <summary>
+        ///     The name of this trait.
+        /// </summary>
+        [DataField("name")]
+        public string Name { get; } = string.Empty;
+
+        /// <summary>
+        ///     The components that get added to the player, when they pick this trait.
+        /// </summary>
+        [DataField("components")]
+        public ComponentRegistry Components { get; } = default!;
+    }
+}