Add new project 'Micro Chat' to projects.md

Author: microbitcoder652

projects.md

@@ -0,0 +1,12 @@
+---
+title: "Micro Chat"
+excerpt: "A micro:bit-powered messaging system"
+layout: single
+collection: projects
+---
+
+## Featured Projects
+
+- [Micro Chat](https://microbitcoder652.github.io/projects/micro-chat/)
+- [Flappy Bird](https://microbitcoder652.github.io/projects/flappy-bird/)
+- [Outdoor Kit](https://microbitcoder652.github.io/projects/outdoor-kit/)