[ImgBot] Optimize images

*Total -- 915.85kb -> 702.68kb (23.28%)

/PDF Watermark Remover/sample001.png -- 219.61kb -> 97.29kb (55.7%)
/TurtleRace/output.png -- 13.44kb -> 9.33kb (30.62%)
/PDF Watermark Remover/img1.jpg -- 480.25kb -> 403.21kb (16.04%)
/Noise Reduction Script/Graph/test_noise.wav(Spectral Subtraction graph).jpg -- 54.51kb -> 46.79kb (14.15%)
/Neon Effect Filter/Image/(Neon Effect Filter)image_.jpg -- 56.77kb -> 54.87kb (3.36%)
/Neon Effect Filter/Image/image_.jpg -- 91.27kb -> 91.19kb (0.09%)

Signed-off-by: ImgBotApp <ImgBotHelp@gmail.com>

Author: ImgBotApp