Add Levite

Levite is a TUI spreadsheet application that uses a Forth-like RPN
programming language instead of traditional formulas and features a
vi-friendly interface.

README.md

@@ -466,6 +466,7 @@ List of projects that provide terminal user interfaces
 - [kabmat](https://github.com/PlankCipher/kabmat) TUI program for managing kanban boards with vim-like keybindings
 - [kanban-python](https://github.com/Zaloog/kanban-python) Kanban Terminal App written in Python
 - [khal](https://github.com/pimutils/khal) A standards based CLI calendar program, able to synchronize with CalDAV servers
+- [levite](https://github.com/RauliL/levite) A TUI spreadsheet application that uses an RPN formulas and features a vi-friendly interface
 - [mcfly](https://github.com/cantino/mcfly) Intelligent context-aware search engine for your shell history
 - [mynav](https://github.com/GianlucaP106/mynav) Workspace and session management for terminal environments
 - [multranslate](https://github.com/Lifailon/multranslate) A TUI for translating text in multiple translators simultaneously, with support for translation history and language detection