Add docs

[Mte90]

    What does the button [DEADBEEF] mean and do.
    What is the proper way to add cheats in the CheatCodes tab.
    Explain what the functions within the [Paramaters] do for example:
    - How is the menu text displayed within a game?
    - How do I know what RAM to use and what are the differences?
    - What is the difference between 1 / 255 cycles and what is the impact?
    - What happens when VBLANK Check is checked and not?
    - What does the trainer do?

From https://gbatemp.net/threads/gbaatm-rebirth-gba-auto-trainer-maker-a-new-hope.564321/#post-9122813, I think that I can improve the readme or add something inside the tool itself.

[RaikaZelkova]

I tried reviewing to see a read me or something. Did you end up updating a file or adding explanations for these on here or TempGBA? I was curious.