Merge codes from archived master branch

[hcoona]

We need to merge it folder by folder carefully.

• https://bneijt.nl/blog/merge-a-subdirectory-of-another-repository-with-git/
• https://stackoverflow.com/questions/41811986/git-move-directory-to-another-repository-while-keeping-the-history

[hcoona]

https://stackoverflow.com/questions/22334382/git-subtree-only-one-file-or-directory

[hcoona]

https://docs.github.com/en/get-started/using-git/splitting-a-subfolder-out-into-a-new-repository?platform=linux

https://docs.github.com/en/get-started/using-git/about-git-subtree-merges