Convert projects to content collections

src/content/projects/my-notes.md

@@ -0,0 +1,15 @@
+---
+title: My Notes
+description: A minimalist Android markdown note organizer and editor powered by Markwon.
+thumbnail:
+  src: ./_assets/my-notes.png
+  alt: Screenshot of the My Notes Android markdown app.
+period: 'November 2019'
+sortDate: 2019-11-01
+technologies: ['Android', 'Kotlin/Java', 'Markdown', 'Markwon']
+selected: false
+essay: my-notes-android-markdown-app
+links:
+  - label: Source
+    url: https://github.com/schmelczer/my-notes
+---