feat: add ScriptManager for VN Gaming

Assets/_MAIN/Scripts/Core/ScriptAction.cs

@@ -0,0 +1,13 @@
+using System.Collections.Generic;
+
+public class ScriptAction
+{
+    public string Type { get; set; }
+    public Dictionary<string, object> Params { get; set; } = new Dictionary<string, object>();
+    public List<Dictionary<string, string>> Choices { get; set; }
+
+    public string GetParam(string key, string defaultValue = "")
+    {
+        return Params.ContainsKey(key) ? Params[key].ToString() : defaultValue;
+    }
+}