Simple template

The simple template will create the following project structure:

src/
├── app.rs     -> holds the state and application logic
├── event.rs   -> handles the terminal events (key press, mouse click, resize, etc.)
├── lib.rs     -> module definitions
├── main.rs    -> entry-point
├── tui.rs     -> initializes/exits the terminal interface
└── game.rs    -> updates and renders a game of snek