[ImgBot] Optimize images

*Total -- 1,243.04kb -> 765.76kb (38.4%)

/public/img/bg.png -- 286.77kb -> 129.71kb (54.77%)
/public/img/exun-logo.png -- 193.93kb -> 88.53kb (54.35%)
/public/img/Plaksha.png -- 433.69kb -> 239.58kb (44.76%)
/public/img/logo-red.png -- 2.88kb -> 1.79kb (37.86%)
/public/img/Circle.png -- 16.34kb -> 12.00kb (26.58%)
/public/img/logo-blue.png -- 21.80kb -> 17.51kb (19.66%)
/public/img/earth.png -- 285.58kb -> 274.61kb (3.84%)
/public/img/Discord-Logo-White.svg -- 2.04kb -> 2.03kb (0.67%)

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

Author: ImgBotApp