Added VDF Generator

007SaveTool/VdfGenerator/KeyValue/Models/KeyValueGroup.cs

@@ -0,0 +1,36 @@
+using EonaCat.FirstLight.SaveTransfer.VdfGenerator.KeyValue.Interfaces;
+
+namespace EonaCat.FirstLight.SaveTransfer.VdfGenerator.KeyValue.Models;
+
+/// <summary>
+/// Represents a hierarchical group of key-value nodes, allowing organization of nested key-value pairs and groups.
+/// </summary>
+/// <param name="key">The key that identifies this group. Cannot be null.</param>
+public class KeyValueGroup(string key) : IKeyValueNode
+{
+    public string Key { get; } = key;
+    public List<IKeyValueNode> Nodes { get; } = [];
+
+    /// <summary>
+    /// Adds a new key-value pair to the group.
+    /// </summary>
+    /// <param name="key">The key to associate with the value. Cannot be null.</param>
+    /// <param name="value">The value to associate with the key. Cannot be null.</param>
+    /// <returns>The current instance with the new key-value pair added.</returns>
+    public KeyValueGroup Add(string key, string value)
+    {
+        Nodes.Add(new KeyValuePair(key, value));
+        return this;
+    }
+
+    /// <summary>
+    /// Adds the specified group to the collection of nodes.
+    /// </summary>
+    /// <param name="group">The group to add to the collection. Cannot be null.</param>
+    /// <returns>The current instance with the added group, enabling method chaining.</returns>
+    public KeyValueGroup Add(KeyValueGroup group)
+    {
+        Nodes.Add(group);
+        return this;
+    }
+}