[ImgBot] Optimize images (#5953)

*Total -- 430.70kb -> 206.91kb (51.96%)

/public/home_bg.png -- 421.20kb -> 198.56kb (52.86%)
/src/assets/logo.svg -- 4.62kb -> 3.80kb (17.61%)
/public/pro_icon.svg -- 4.89kb -> 4.54kb (7.11%)

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

Co-authored-by: Imgbot <help@imgbot.net>