Optimize code with chatgpt

[laohanlinux]

ChatGPT is NB，So next, I'm going to optimize the code with the help of ChatGPT

• SkipList
  Use DoubleAlloc to store SkipList.Node has append only from start that avoid memory align layout(AtomicU64 at diff platform has diff align way, eg: M1 arm). Key and Value only append from end