Import from internal git

Core/Events/DisplayArgs.cs

@@ -0,0 +1,3 @@
+namespace Core.Events;
+
+public record DisplayEventArgs(string? Content); 

Core/Events/DisplayEmitter.cs

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+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));
+    }
+}

Core/Events/IEmitter.cs

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+namespace Core.Events;
+
+/*public interface IEmitter<T> 
+{
+    public event EventHandler<T>? OnSay;
+    public event EventHandler<T>? OnWarn;
+    public void Say(object? sender, T args);
+    public void Warn(object? sender, T args);
+}*/