DPad Usage:
  a  b  x  y for Buttons
  ^  v  <  > for Dpad
  8  2  4  6 for Dpad
  N  S  E  W for Left stick
  n  s  e  w for Right stick
  O  o       for Left and Right stick click
  l  r       for Left and Right
  L  R       for ZL and ZR
  +  -  c  h are Plus, Minus, Capture and Home

  Filenames should end in .png

  Examples:
    https://restite.org/dpad/abba.png
    https://restite.org/dpad/88224646ba.png
    https://restite.org/dpad/NEWSnews.png