add tui-deck application to readme

README.md

@@ -113,6 +113,7 @@ For a presentation highlighting this package, compile and run the program found
 - [gh: the GitHub CLI](https://github.com/cli/cli)
 - [piptui: Terminal UI to manage pip packages](https://github.com/glendsoza/piptui/)
 - [cross-clipboard: A cross-platform clipboard sharing](https://github.com/ntsd/cross-clipboard)
+- [tui-deck: nextcloud deck frontend](https://github.com/mebitek/tui-deck)
 
 ## Documentation