update with initial syntaxer implementation

inc/syntaxer.hpp

@@ -0,0 +1,18 @@
+#pragma once
+
+#include <vector>
+#include <memory>
+#include "expression.hpp"
+
+namespace Syntax
+{
+
+struct SyntaxIssue
+{
+
+};
+
+std::vector<SyntaxIssue> check_syntax(std::vector<Expression::Token>& tv);
+std::shared_ptr<Expression::TreeNode> build_op_tree(std::vector<Expression::Token>& tv);
+
+}