Complete filters

[nikolaydymura]

• [x] GPUImage3x3ConvolutionFilter ~GPUImage3x3TextureSamplingFilter~
• [x] GPUImageColorBalanceFilter
• [x] GPUImageColorInvertFilter
• [x] GPUImageColorMatrixFilter
• [ ] GPUImageDilationFilter
• [x] GPUImageDirectionalSobelEdgeDetectionFilter
• [x] GPUImageEmbossFilter
• [x] GPUImageFalseColorFilter ~GPUImageFilter~ ~GPUImageFilterGroup~
• [x] GPUImageGlassSphereFilter
• [x] GPUImageKuwaharaFilter
• [x] GPUImageLaplacianFilter
• [x] GPUImageLevelsFilter ~GPUImageLookupFilter~ ~GPUImageMixBlendFilter~
• [x] GPUImageNonMaximumSuppressionFilter
• [ ] GPUImageRGBDilationFilter
• [x] GPUImageSketchFilter
• [ ] GPUImageSmoothToonFilter
• [x] GPUImageSobelEdgeDetectionFilter
• [x] GPUImageSobelThresholdFilter
• [ ] GPUImageThresholdEdgeDetectionFilter
• [x] GPUImageTransformFilter ~GPUImageTwoInputFilter~ ~GPUImageTwoPassFilter~ ~GPUImageTwoPassTextureSamplingFilter~

[nataliiazabiiaka]

GPUImage3x3ConvolutionFilter, GPUImageColorInvertFilter, GPUImageDirectionalSobelEdgeDetectionFilter, GPUImageLaplacianFilter, GPUImageLevelsFilter, GPUImageNonMaximumSuppressionFilter, GPUImageSobelEdgeDetectionFilter, GPUImageTransformFilter - has another parameters; GPUImageColorBalanceFilter, GPUImageKuwaharaFilter, GPUImageSketchFilter - has conditional statements; GPUImageColorMatrixFilter, GPUImageFalseColorFilter, GPUImageGlassSphereFilter, GPUImageSobelThresholdFilter - has another final patameter except float parameter; GPUImageDilationFilter, GPUImageEmbossFilter, GPUImageRGBDilationFilter, GPUImageSmoothToonFilter, GPUImageThresholdEdgeDetectionFilter - didn't know what to copy.