Systick Implementation

Summary

With this PR we aim to use Systick interruptions to update our system periodically

Before, everything was done inside a while loop in main.c and almost all delays were done with a for loop. Now, this has been optimized and our system is more efficient and precise by avoiding unnecessary work all the time.
In the process, by implementing systick interruptions, we noticed that now the speedometer can work without DMA interruptions, making this module more efficient too