Bug Fix: Missed Button Press - Cleanup Logic

[danagarcia]

Cleans up the loop logic, as well as fixes the bug of missing button presses due to using the delay function.

Usage of the delay function can cause a miss in detecting a button press. To avoid this you can utilize a time based loop delay continuously listening for the button press while locking the thread into this listening loop for a specified period of time. I've also adjusted the flat if, if else, else statements into nested ifs to save time on duplicate comparisons.

[danagarcia]

As a side note, I've tested this commit on my person Pi Pico and it runs well:

[mwood77]

Great work 👍