Simplify the hat format for unanimated hats
For simple hats which are not animated, a single 32×32 image is now enough.
For simple clan hats, use 64×32 with the color overlay at the right.
[patterns]
**.h = native
**.c = native
**.cpp = native
**.lua = native
**.txt = native
**.pas = native
**.inc = native
**.hs = native