Performance improvements and code cleanup

YesNt.Interpreter/Runtime/StatementHandler.cs

@@ -0,0 +1,9 @@
+using System;
+using YesNt.Interpreter.Attributes;
+
+namespace YesNt.Interpreter.Runtime;
+
+/// <summary>
+/// Pre-calculated statement handler information for faster matching.
+/// </summary>
+internal record StatementHandler(StatementAttribute Attribute, Action<string> Handler, string FullName);