add lex.h and lex.c except next_token

include/globals.h

@@ -1,30 +1,35 @@
 #pragma once
+#include <stdint.h>
 
 typedef enum {
     LBRACK,
     RBRACK,
     LCURLY,
     RCURLY,
+    LPAREN,
+    RPAREN,
 
-    ID,
     SEMI,
     COMMA,
     ARROW,
     STAR,
+    ANDREF,
+    DOLLAR,
+
     COMMENT,
+    ID,
     NUM,
+    STRING_LITERAL,
 
     RETURN,
     IF,
     ELSE,
-
-    STRING_LITERAL,
-
+    
     ERROR
 } TokenType;
 
 typedef struct {
     TokenType type;
     char *data;
-    int line;
+    uint32_t line;
 } Token;