Change character names to use datasets prototypes (#3259)

* Remove old name lists in .txts

* Fix tests

* LATEST MASTER TECHNOLOGY

Content.Shared/Preferences/Sex.cs

@@ -1,8 +1,32 @@
-namespace Content.Shared.Preferences
+#nullable enable
+using System;
+using Content.Shared.Prototypes;
+using Robust.Shared.IoC;
+using Robust.Shared.Prototypes;
+
+namespace Content.Shared.Preferences
 {
     public enum Sex
     {
         Male,
         Female
     }
+
+    public static class SexExtensions
+    {
+        public static DatasetPrototype FirstNames(this Sex sex, IPrototypeManager? prototypeManager = null)
+        {
+            prototypeManager ??= IoCManager.Resolve<IPrototypeManager>();
+
+            switch (sex)
+            {
+                case Sex.Male:
+                    return prototypeManager.Index<DatasetPrototype>("names_first_male");
+                case Sex.Female:
+                    return prototypeManager.Index<DatasetPrototype>("names_first_female");
+                default:
+                    throw new ArgumentOutOfRangeException(nameof(sex), sex, null);
+            }
+        }
+    }
 }