Add tvterm (#169)

tvterm is a terminal emulator widget and application based on the
Turbo Vision framework.

README.md

@@ -313,6 +313,7 @@ List of projects that provide terminal user interfaces
 - [TUIFIManager](https://github.com/GiorgosXou/TUIFIManager) A cross-platform terminal-based file manager *(supports termux)*
 - [TUI_ProjectManager](https://github.com/NicoDblc/TUI_ProjectManager) A simple project-based todo list written in Rust
 - [tuihub](https://github.com/ashis0013/tuihub) A utility hub/dashboard for personal use
+- [tvterm](https://github.com/magiblot/tvterm) A terminal emulator that runs in your terminal
 - [Visidata](https://github.com/saulpw/visidata) A terminal spreadsheet multitool for discovering and arranging data
 - [zellij](https://github.com/zellij-org/zellij) A terminal workspace with batteries included
 - [Vifm](https://vifm.info) File manager with Vim bindings and scripting/configuration style