Localize traits (#11765)

Co-authored-by: metalgearsloth <31366439+metalgearsloth@users.noreply.github.com>

Content.Shared/Traits/TraitPrototype.cs

@@ -10,6 +10,9 @@ namespace Content.Shared.Traits
     [Prototype("trait")]
     public sealed class TraitPrototype : IPrototype
     {
+        private string _name = string.Empty;
+        private string? _description;
+
         [ViewVariables]
         [IdDataField]
         public string ID { get; } = default!;
@@ -18,13 +21,21 @@ namespace Content.Shared.Traits
         ///     The name of this trait.
         /// </summary>
         [DataField("name")]
-        public string Name { get; } = string.Empty;
+        public string Name
+        {
+            get => _name;
+            private set => _name = Loc.GetString(value);
+        }
 
         /// <summary>
         ///     The description of this trait.
         /// </summary>
         [DataField("description")]
-        public string? Description { get; }
+        public string? Description
+        {
+            get => _description;
+            private set => _description = value is null ? null : Loc.GetString(value);
+        }
 
         /// <summary>
         ///     Don't apply this trait to entities this whitelist IS NOT valid for.