Improve on disposal routing code (#1795)

Co-authored-by: Julian Giebel <j.giebel@netrocks.info>

Content.Shared/GameObjects/Components/Disposal/SharedDisposalRouterComponent.cs

@@ -2,6 +2,7 @@
 using Robust.Shared.GameObjects.Components.UserInterface;
 using Robust.Shared.Serialization;
 using System;
+using System.Text.RegularExpressions;
 
 namespace Content.Shared.GameObjects.Components.Disposal
 {
@@ -9,6 +10,8 @@ namespace Content.Shared.GameObjects.Components.Disposal
     {
         public override string Name => "DisposalRouter";
 
+        public static readonly Regex TagRegex = new Regex("^[a-zA-Z0-9, ]*$", RegexOptions.Compiled);
+
         [Serializable, NetSerializable]
         public class DisposalRouterUserInterfaceState : BoundUserInterfaceState
         {