Support for a more terminal-like experience

[alice-i-cecile]

This is useful for making "terminal games" that can be run on the web.

Desired features:

• Console cannot be moved or closed
• Console typically fills screen, and resizes to it
• Console size can still be set, in order to share the screen

Stretch goals:

• Ability to seamlessly change out the terminal backend for a Real Terminal
• Basic turn-based game architecture

See fork created here for Bevy Jam 1.0 :)

[Victor-N-Suadicani]

Personally feel this would belong better as an entirely separate plugin. Feel like the goals of this one should stay as a "debug" console only.