Made basic quest setup

scripts/CSharp/Common/Util/NodeExtension.cs

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+using System;
+using Godot;
+namespace Babushka.scripts.CSharp.Common.Util;
+
+public static class NodeExtension
+{
+    /// <summary>
+    /// Searches for a parent node of the specified type.
+    /// </summary>
+    /// <typeparam name="T">The type of the parent node to search for. The search is successful, when <code>searchedNode is T</code></typeparam>
+    /// <param name="self">The node from which to start the search.</param>
+    /// <returns>The parent node of type T if found, otherwise throws an exception.</returns>
+    public static T FindParentByType<T>(this Node self)
+    {
+        var parent = self.GetParent();
+        while (parent != null)
+        {
+            if (parent is T tParent)
+            {
+                return tParent;
+            }
+            parent = parent.GetParent();
+        }
+        throw new Exception($"Parent of type {typeof(T)} not found for node {self.Name}");
+    }
+}

scripts/CSharp/Common/Util/NodeExtension.cs.uid

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+uid://bwisbh2f2ci6l