Add generic no codegen dbl list API

src/os/cpath/cpath.c

@@ -29,7 +29,7 @@ u32 wapp_cpath_join_path(Str8 *dst, const Str8List *parts) {
   }
 
   // Handle first node
-  const Str8Node *first_node = wapp_str8_list_get(parts, 0);
+  const Str8Node *first_node = wapp_dbl_list_get(Str8, Str8Node, parts, 0);
   wapp_str8_copy_str8_capped(dst, first_node->item);
 
   // NOTE (Abdelrahman): Uses a while loop instead of a for loop to get rid of
@@ -106,7 +106,7 @@ Str8 *dirup(const Allocator *allocator, Str8RO *path, u64 levels) {
     wapp_str8_push_back(output, absolute ? WAPP_PATH_SEP : '.');
   } else {
     for (u64 i = 0; i < levels; ++i) {
-      wapp_str8_list_pop_back(parts);
+      wapp_dbl_list_pop_back(Str8, Str8Node, parts);
     }
     
     u64 alignment  = sizeof(void *) * 2;