User interface setup for custom IPC location

Right now makes use of another ActionableInfo field. Probably a better idea to add an extra button to the Current IPC Storage actionable field.

osu.Game.Tournament/Components/IPCNotFoundDialog.cs

@@ -0,0 +1,27 @@
+// Copyright (c) ppy Pty Ltd <contact@ppy.sh>. Licensed under the MIT Licence.
+// See the LICENCE file in the repository root for full licence text.
+
+using osu.Framework.Graphics.Sprites;
+using osu.Game.Overlays.Dialog;
+
+namespace osu.Game.Tournament.Components
+{
+    public class IPCNotFoundDialog : PopupDialog
+    {
+        public IPCNotFoundDialog()
+        {
+            BodyText = "Select a directory that contains an osu! Cutting Edge installation";
+
+            Icon = FontAwesome.Regular.Angry;
+            HeaderText = @"This is an invalid IPC Directory!";
+            Buttons = new PopupDialogButton[]
+            {
+                new PopupDialogOkButton
+                {
+                    Text = @"Alright.",
+                    Action = () => { Expire(); }
+                }
+            };
+        }
+    }
+}