Refactor statements

src/lang/Nub.Lang/Frontend/Parsing/Definitions/StructDefinitionNode.cs

@@ -0,0 +1,17 @@
+using Nub.Lang.Frontend.Lexing;
+using Nub.Lang.Frontend.Typing;
+
+namespace Nub.Lang.Frontend.Parsing;
+
+public class StructField(string name, NubType type, Optional<ExpressionNode> value)
+{
+    public string Name { get; } = name;
+    public NubType Type { get; } = type;
+    public Optional<ExpressionNode> Value { get; } = value;
+}
+
+public class StructDefinitionNode(IReadOnlyList<Token> tokens, Optional<string> documentation, string name, List<StructField> fields) : DefinitionNode(tokens, documentation)
+{
+    public string Name { get; } = name;
+    public List<StructField> Fields { get; } = fields;
+}