feat: split out quickjs.c into multiple files

Author: andycall

cutils.h renamed to include/quickjs/cutils.h

@@ -1,6 +1,6 @@
 /*
  * Linux klist like system
- * 
+ *
  * Copyright (c) 2016-2017 Fabrice Bellard
  *
  * Permission is hereby granted, free of charge, to any person obtaining a copy
@@ -28,6 +28,8 @@
 #include <stddef.h>
 #endif
 
+#include <stdio.h>
+
 struct list_head {
     struct list_head *prev;
     struct list_head *next;
@@ -46,7 +48,7 @@ static inline void init_list_head(struct list_head *head)
 }
 
 /* insert 'el' between 'prev' and 'next' */
-static inline void __list_add(struct list_head *el, 
+static inline void __list_add(struct list_head *el,
                               struct list_head *prev, struct list_head *next)
 {
     prev->next = el;