[ImgBot] Optimize images

*Total -- 77.76kb -> 56.35kb (27.53%)

/public/logo512.png -- 22.63kb -> 16.07kb (29%)
/src/assets/logo.png -- 22.63kb -> 16.07kb (29%)
/public/favicon.png -- 22.63kb -> 16.07kb (29%)
/public/logo192.png -- 9.88kb -> 8.15kb (17.45%)

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

Author: ImgBotApp