templates support

Inspectron.Epson.Templates/Language/Nodes/ForeachNode.cs

@@ -0,0 +1,21 @@
+namespace Inspectron.Epson.Templates.Language.Nodes;
+
+public record ForeachNode(
+    string ItemVariable,
+    string CollectionPath,
+    List<ITemplateNode> Body,
+    SourcePosition Position) : ITemplateNode
+{
+    public IReadOnlyList<ITemplateNode> Children => Body;
+
+    public static (string ItemVariable, string CollectionPath) ParseForeach(string value)
+    {
+        // Expected format: "item in collection" or "item in collection.path"
+        var parts = value.Split(" in ", 2, StringSplitOptions.TrimEntries);
+        if (parts.Length != 2)
+        {
+            throw new FormatException($"Invalid foreach syntax: '{value}'. Expected 'item in collection'.");
+        }
+        return (parts[0], parts[1]);
+    }
+}