[ImgBot] Optimize images

*Total -- 800.39kb -> 450.87kb (43.67%)

/frontend/public/logo.png -- 763.79kb -> 420.96kb (44.89%)
/frontend/public/check.png -- 31.11kb -> 24.47kb (21.36%)
/frontend/public/vite.svg -- 1.46kb -> 1.42kb (2.81%)
/frontend/src/assets/react.svg -- 4.03kb -> 4.02kb (0.15%)

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

Author: ImgBotApp