add numbers to parser

src/parser/number/number.h

@@ -0,0 +1,11 @@
+// parser.h
+
+#ifndef NUMBER_H
+#define NUMBER_H
+#include "../parser.h"
+#include "../../lexer/token.h"  // for Token
+
+// Function declaration for parsing an identifier
+ParsedValue * parse_number(Token * token);
+
+#endif // NUMBER_H