SML2 framerate/load time comparison instructions

Comparing framerates and loading times of Game Boy platforms

  - using normalized setups in SML2

    1. Framerate

	  - enter the castle and let the timer run out (it's by far the longest segment in the game with an in-game timer)

      - example video: https://youtu.be/EJEsZVoR1bE

    2. Loading times

      - repeatedly enter and leave Macro Zone by buffering the respective input (start inside Macro Zone by pressing left on the d-pad;
        while the screen is transitioning hold the jump button which will let you re-enter Macro Zone on the 1st possible frame; during
        that transition already hold the left button of the d-pad again to leave Macro Zone on the 1st possible frame; repeat at least
        51 times. It's easy to lose count, so just doing it for at least 4:30 minutes is advised.)

      - example video: https://youtu.be/2vTW6Tx6vzI