Add OXY2DEV/ui.nvim (#1520)

* Add `OXY2DEV/ui.nvim`

Author: OXY2DEV

README.md

@@ -1009,6 +1009,7 @@ These colorschemes may not specialize in Tree-sitter directly but are written in
 - [kiyoon/jupynium.nvim](https://github.com/kiyoon/jupynium.nvim) - Selenium-automated Jupyter Notebook that is synchronised with Neovim in real-time.
 - [y3owk1n/time-machine.nvim](https://github.com/y3owk1n/time-machine.nvim) - Take control of your edit history with an interactive timeline, diff previews, taggings, live reloading trees and cleanup functions.
 - [BibekBhusal0/bufstack.nvim](https://github.com/BibekBhusal0/bufstack.nvim) - Track recently visited buffers and reopen recently closed buffers.
+- [OXY2DEV/ui.nvim](https://github.com/OXY2DEV/ui.nvim) - A blueprint/template/guide for customizing the UI.
 
 ### CSV Files