Controller Support, Less Awkward Keyboard Controls, Coyote Time and More

Added:

• Coyote Time 
  Now you can jump even after slightly walking off a platform to make the game feels more responsive. (thanks to @jevin_dev for suggesting it)
• Controller Support
  Added Controller Support functionality (UI still not updated yet for controller but the game is playable with a controller mapping in the game description).
• Visual Tutorial
  Added tutorial at the beginning of the game to help people play.

Fixes:

• Superdash height  & direction on air
  Fixed an issue where superdash would not go as far as if you are on the ground and sometimes will go diagonally even though you are not pressing diagonals by zeroing the velocity before applying the dash.
• Awkward controls
  A lot of people said the control for the combos Z,X,C,F are too awkward because F are not in the same row, I have fixed it by changing it to Z,X,C,V with V replacing F (but I left F as an optional input for those who have played it before)