Introduced dialogue graph magic, created assest and importers. Added events for broadcasting puzzle steps

Assets/Scripts/Dialogue/RuntimeDialogueGraph.cs

@@ -0,0 +1,22 @@
+using System;
+using System.Collections.Generic;
+using UnityEngine;
+
+namespace Dialogue
+{
+    [Serializable]
+    public class RuntimeDialogueGraph : ScriptableObject
+    {
+        public string entryNodeID;
+        public string speakerName;
+        public List<RuntimeDialogueNode> allNodes = new List<RuntimeDialogueNode>();
+    }
+
+    [Serializable]
+    public class RuntimeDialogueNode
+    {
+        public string nodeID;
+        public string dialogueLine;
+        public string nextNodeID;
+    }
+}