add new blog post for testing

src/pages/blog/testing.md

@@ -0,0 +1,10 @@
+---
+layout: "../layouts/Blog.astro"
+title: "Testing"
+subtitle: "The entire point of this blog post is to test something"
+author: Andrew
+tags: ["one", "two", "three"]
+slug: "blog/testing"
+---
+
+hello world