Implement equivalents for most-commonly-used Flashpunk APIs

[djcsdy]

Count Name
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  113 net.flashpunk.Entity
  101 net.flashpunk.FP
   60 net.flashpunk.graphics.Image
   55 net.flashpunk.Graphic
   50 net.flashpunk.Mask
   38 net.flashpunk.graphics.Text
   35 net.flashpunk.utils.Input
   30 net.flashpunk.World
   27 net.flashpunk.graphics.Spritemap
   19 net.flashpunk.Sfx
   16 net.flashpunk.utils.Key
   12 net.flashpunk.Engine
   11 net.flashpunk.graphics.Graphiclist
    5 net.flashpunk.masks.Hitbox
    4 net.flashpunk.graphics.Tilemap
    4 net.flashpunk.masks.Grid
    2 net.flashpunk.graphics.Emitter
    2 net.flashpunk.graphics.Backdrop
    2 net.flashpunk.graphics.Anim
    1 net.flashpunk.utils.Draw
    1 net.flashpunk.utils.Ease
    1 net.flashpunk.masks.Pixelmask