RSoC 2026: EEVDF Scheduler

The EEVDF scheduler was successfully implemented to replace the DWRR scheduler. It features more dynamic calculations than the simple DWRR which should make the system a lot more fair in CPU time distribution. The new scheduler is more stable than the old one and improved the Pixelcannon demo performance by around 200 FPS! (do note that the implementation for EEVDF has not yet gone through optimisation phase). Expect the system to be more stable and faster now!