Git Submodule 允許你在一個 Git 倉庫內嵌套另一個 Git 倉庫，適用於依賴管理或共享代碼的場景。
1. 添加 Submodule
git submodule add <repository_url> <path>About 2 min
push時, error如下
$ git push -u origin main
fatal: 'origin' does not appear to be a git repository
fatal: Could not read from remote repository.
Please make sure you have the correct access rights
and the repository exists.Less than 1 minute