refactor

src/lexer.h

@@ -0,0 +1,17 @@
+#include <string>
+#include <optional>
+#include <vector>
+
+namespace Solstice {
+    class Lexer {
+        std::string input;
+        size_t size;
+        size_t current;
+        std::optional<char> peek(int ahead = 1); 
+        std::optional<char> consume();
+        public:
+        Lexer(std::string in);
+        std::vector<std::string> lex();  
+
+    };
+}