- New Resource, EguiQueue: Utility to queue egui ui builders
- New Rendering System, EguiRenderer: Utilizes a modified egui_glium
library to render egui UI
- Adjusted RenderingSystem trait and RenderingContext structure to
provide event_loop and egui_queue.
- Various minor adjusments
- Move engine to a different crate
- Add engine trait
- Refactor the rest of the codebase to work with these changes
- Add debug ui buffer, use it to finish imgui support
