[ImgBot] Optimize images

*Total -- 1,274.43kb -> 987.57kb (22.51%)

/docs/image-3.png -- 60.86kb -> 38.02kb (37.52%)
/docs/image.png -- 540.86kb -> 411.24kb (23.97%)
/docs/image-1.png -- 153.41kb -> 118.33kb (22.86%)
/public/screenshots/screenshot-mobile-0.png -- 233.54kb -> 185.19kb (20.71%)
/docs/image-2.png -- 62.45kb -> 50.07kb (19.82%)
/public/screenshots/screenshot-mobile-1.png -- 195.77kb -> 158.21kb (19.18%)
/public/icons/icon-512x512.png -- 16.70kb -> 15.99kb (4.22%)
/public/icons/icon-384x384.png -- 10.84kb -> 10.52kb (2.94%)

Signed-off-by: ImgBotApp <[email protected]>

Author: ImgBotApp