Add player autofill to rename command. (#38074)

* simple enough

* switch to CompletionResult.FromOptions and CompletionHelper.SessionNames

* cleanup

Content.Server/Mind/Commands/RenameCommand.cs

@@ -1,6 +1,5 @@
 using System.Diagnostics.CodeAnalysis;
 using Content.Server.Administration;
-using Content.Shared.Access.Components;
 using Content.Shared.Administration;
 using Content.Shared.CCVar;
 using Robust.Server.Player;
@@ -60,4 +59,12 @@ public sealed class RenameCommand : LocalizedEntityCommands
         entityUid = EntityUid.Invalid;
         return false;
     }
+
+    public override CompletionResult GetCompletion(IConsoleShell shell, string[] args)
+    {
+        if (args.Length == 1)
+            return CompletionResult.FromOptions(CompletionHelper.SessionNames());
+
+        return CompletionResult.Empty;
+    }
 }