improvement: add readme item for shuttle-template-actix (#729)

Co-authored-by: Rob Ede <robjtede@icloud.com>

README.md

@@ -34,6 +34,7 @@
 - [rustypaste](https://github.com/orhun/rustypaste): A minimal file upload/pastebin service
 - [rustus](https://github.com/s3rius/rustus): A TUS protocol implementation that helps you handle file uploads
 - [gcs-proxy](https://github.com/guaychou/gcs-proxy): A Google Cloud Storage download proxy
+- [Actix-Web Shuttle Template](https://github.com/sentinel1909/shuttle-templat-actix): A somewhat opinionated template for getting started with an Actix Web API and hosting it on Shuttle.
 
 ## Community Articles, Example Apps, Starters & Boilerplate Projects