Move projects into separate pages and respective folders

projects/sourcebook/index.md

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+---
+title: Sourcebook
+layout: default
+---
+
+# Sourcebook
+
+![sourcebook.png](assets/sourcebook.png "Screenshot of Sourcebook, a lightweight CMS for class websites.")
+
+**A lightweight content management system (CMS) designed to build class
+websites.** I designed it to be a self-hosted alternative for popular apps like
+Notion, while offering additional features tailored to support schoolwork.
+
+I designed an entity-relationship diagram, MySQL database schema, and HTML/CSS
+high-fidelity prototype to support the project and show to professors. I then
+built a lightweight full-stack application using Python, Flask, and MySQL.
+
+[GitHub](https://github.com/brendan-ch/sourcebook){: .primary-action }
+{: .horizontal-wrapper }