Add a Submodule

# Introduction

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<p>🧑‍💻 New to Git or LabEx? We recommend starting with the <b><a style="color: unset;text-decoration: underline;" href="https://labex.io/courses/quick-start-with-git" target="_blank">Quick Start with Git</a></b> course.</p>
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Submodules are a way to include one Git repository as a subdirectory of another Git repository. This can be useful when you want to include a third-party library or a shared codebase in your project. In this lab, you will learn how to add a submodule to a Git repository.