Refactor statements

src/lang/Nub.Lang/Frontend/Parsing/Expressions/IdentifierNode.cs

@@ -0,0 +1,10 @@
+using Nub.Lang.Frontend.Lexing;
+
+namespace Nub.Lang.Frontend.Parsing;
+
+public class IdentifierNode(IReadOnlyList<Token> tokens, string identifier) : ExpressionNode(tokens)
+{
+    public string Identifier { get; } = identifier;
+
+    public override string ToString() => Identifier;
+}