Add blog post about submodules

_posts/2024-04-18-submodules.md

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+# Setting up submodules in your repo
+Sometimes, when working cross-project or with code that's been cloned from
+elsewhere, it helps to add them as a submodule to a main repo.
+
+For example, for assignment 2 I need to write a blog (this one!),
+generate a fingerprint identifier GUI and train image classification models
+on a CPU and GPU, all of which are in different repos upon set up.
+
+Without submoduling, each time I log in to a remote desktop session to
+remote lab computers, I'd need to clone each of these repos individually
+which is a lot more effort than it's worth.
+
+## Steps to add a submodule repo
+### 1. Clone your main repo
+```sh
+git clone <YOUR_MAIN_REPO>
+```
+
+### 2. Clone in your sub-module repo/s
+Just clone in your submodules like normal here. The magic is in the next step.
+
+```sh
+cd <YOUR_MAIN_REPO>
+git clone <YOUR_SUBMODULE_REPO> <SUBMODULE_REPO_NAME>
+```
+
+### 3. Add your repo to git
+```git
+git submodule add <YOUR_SUBMODULE_REPO_LINK> <SUBMODULE_REPO_NAME>
+```
+If successful, you should get a message saying that it has been successfully added.
+
+And voila! You should be able to verify that a submodule has been added on github.
+
+
+## Steps to clone your repo with submodules
+Now, when