Add News page

[sbarber2]

Add a simple static page with project news.

For example:

• PlantTracer iOS app is known to be compatible with iOS version x-y and iPhone models a-c; please use it
• New PlantTracer webapp to be released in Fall '23.
• PAT application on Mac now easier to install and here's where to get it
• etc.

The scope of this issue does NOT include making the new page a blog-style resource; that would be a separate issue.