Added LearnByExample TUI under Miscellaneous (#256)

SheetsUI is a console based spreadsheet application written in Rust.

README.md

@@ -323,6 +323,7 @@ List of projects that provide terminal user interfaces
 - [impala](https://github.com/pythops/impala) TUI for managing wifi
 - [isw](https://gitlab.com/thom-cameron/isw) A simple terminal stopwatch application for pomodoro etc.
 - [jrnl](https://jrnl.sh/) Collect your thoughts and notes without leaving the command line. human-friendly. future-proof. secure.
+- [LearnByExample](https://github.com/learnbyexample/TUI-apps) A TUI with tutorials and +300 exercises on python, grep, awk, sed & general terminal usage.
 - [lnav](https://lnav.org/) An advanced log file viewer for the small-scale
 - [mapscii](https://github.com/rastapasta/mapscii) Braille & ASCII world map renderer for your console
 - [mqttui](https://github.com/EdJoPaTo/mqttui) MQTT Client written in rust
@@ -414,6 +415,7 @@ List of projects that provide terminal user interfaces
 - [procmux](https://github.com/napisani/procmux) - a TUI for running multiple commands in parallel in easily switchable terminals
 - [productivity-timer](https://github.com/h-sifat/productivity-timer) A command line time tracker application with a sleek TUI.
 - [sc-im](https://github.com/andmarti1424/sc-im) An ncurses spreadsheet program for terminal. Reignited version of sc
+- [SheetsUI](https://github.com/zaphar/sheetsui) A console based spreadsheet application
 - [slides](https://github.com/maaslalani/slides) A terminal based presentation tool, supporting markdown syntax.
 - [taskline](https://github.com/perryrh0dan/taskline) Tasks, boards & notes for the command-line habitat
 - [taskwarrior-tui](https://github.com/kdheepak/taskwarrior-tui) A Terminal User Interface for Taskwarrior