Add Playlet to "Projects using Invidious" (#3640)

README.md

@@ -154,6 +154,7 @@ Weblate also allows you to log-in with major SSO providers like Github, Gitlab,
 - [Yattee](https://github.com/yattee/yattee): Alternative YouTube frontend for iPhone, iPad, Mac and Apple TV.
 - [TubiTui](https://codeberg.org/777/TubiTui): A lightweight, libre, TUI-based YouTube client.
 - [Ytfzf](https://github.com/pystardust/ytfzf): A posix script to find and watch youtube videos from the terminal. (Without API)
+- [Playlet](https://github.com/iBicha/playlet): Unofficial Youtube client for Roku TV
 
 
 ## Liability