Add sharpen method.
Add sharpen method.

smghacker/SimpleImageProcessor,son4etyyy/SimpleImageProcessor,imayorski/SimpleImageProcessor,son4etyyy/SimpleImageProcessor,imayorski/SimpleImageProcessor,son4etyyy/SimpleImageProcessor,son4etyyy/SimpleImageProcessor,imayorski/SimpleImageProcessor,smghacker/SimpleImageProcessor,son4etyyy/SimpleImageProcessor,imayorski/SimpleImageProcessor,smghacker/SimpleImageProcessor,imayorski/SimpleImageProcessor,smghacker/SimpleImageProcessor,smghacker/SimpleImageProcessor