Fix ast nodes now containing token entry instead of token

src/ast.h

@@ -3,6 +3,7 @@
 
 #include "error.h"
 #include "lexer.h"
+#include "tokenlist.h"
 #include <stddef.h>
 #include <stdint.h>
 
@@ -23,7 +24,7 @@ constexpr size_t node_max_children_cap = 1 << 16;
 
 struct ast_node {
     node_id_t id;
-    lexer_token_t *token;
+    tokenlist_entry_t *token_entry;
     size_t len;
     size_t cap;
     ast_node_t **children;