How to add a git repo inside another repository

just cloning the repo inside the parent is not going to be enough. we need to use git submodules.

follow these instructions:

• cd into the parent repo
• run git submodule add https://github.com/yourusername/the_repo_name
• commit and push your changes

if you've already cloned the repo by mistake and have committed it to the parent, use the following instead:

• run git rm -r --cached the_repo_name
• git commit -m "removed the child repo"
• run git submodule add https://github.com/yourusername/the_repo_name
• commit and push your changes