Minimal app
This is an example of a simple application where the
echo command will duplicate all arguments passed.
example.py

Program description:
Eggella- main class application, register all commands and events@app.on_startup()- register startup events@app.on_close()- register on close app events (on invokeexitor press CTRL+C)@app.on_command()- register commandsapp.loop()- start application method