Add an in-game debug menu

[lunacys]

Add an in-game debug menu using egui.

Useful features to add into this menu:

• Spawn specific enemies/tiles/items/upgrades/etc.
• Enable/disable enemy spawns.
• Despawn all enemies.
• Reset player (health, remove all upgrades, etc).

[Sereja313]

Do you mean adding it to a debug build or a release build as a sort of "creative" mode?

[lunacys]

Do you mean adding it to a debug build or a release build as a sort of "creative" mode?

Debug build only. But adding a "creative" mode is an interesting idea too.