Add an ingame GUI

[StarGate01]

Inject IMGUI and use it as settings editor or console

[StarGate01]

Initial demo proof of concept in branch gui, thanks to https://github.com/ExtraConcentratedJuice/ChristWareAmongUs . Press DEL to open and close.

TODO:

• Wrap in class
• Add multiple tabs
• Use IMGUI console instead of native one once loaded (to be discussed)
• Add config editor

Known issues:

• Game has to be restarted after graphics resolution change in options. wontfix.

[ItaiCuker]

What will be its use?

[StarGate01]

Ingame status monitoring and settings editor.

[alisenai]

As per 1e8277e05c31f845cb07dd777acd87fa1ee6dd28, there is now player state information and editable config settings implemented in the GUI.