added dialog bubble without function

src/scene-scripts/gui/dialog_bubble.cs

@@ -0,0 +1,16 @@
+using Godot;
+using System;
+
+public partial class dialog_bubble : CanvasLayer
+{
+	// Called when the node enters the scene tree for the first time.
+	public override void _Ready()
+	{
+		Show();
+	}
+
+	// Called every frame. 'delta' is the elapsed time since the previous frame.
+	public override void _Process(double delta)
+	{
+	}
+}