Import from internal git

Core/Events/DisplayEmitter.cs

@@ -0,0 +1,17 @@
+namespace Core.Events;
+
+public class DisplayEmitter
+{
+    public event EventHandler<DisplayEventArgs>? OnSay;
+    public event EventHandler<DisplayEventArgs>? OnWarn;
+
+    public void Say(object? sender, string message)
+    {
+        OnSay?.Invoke(this, new DisplayEventArgs(message));
+    }
+
+    public void Warn(object? sender, string message)
+    {
+        OnWarn?.Invoke(this, new DisplayEventArgs(message));
+    }
+}