[ImgBot] Optimize images

*Total -- 9,915.06kb -> 6,591.28kb (33.52%)

/web/icons/Icon-maskable-512.png -- 20.51kb -> 10.54kb (48.61%)
/screenshots/windows_light.png -- 2,373.71kb -> 1,516.75kb (36.1%)
/screenshots/macos_light.png -- 3,723.94kb -> 2,471.68kb (33.63%)
/web/icons/Icon-maskable-192.png -- 5.46kb -> 3.66kb (33.05%)
/screenshots/macos_dark.png -- 3,741.21kb -> 2,553.11kb (31.76%)
/assets/cjs_logo.png -- 50.23kb -> 35.54kb (29.24%)

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

Author: ImgBotApp