[ImgBot] Optimize images

*Total -- 752.17kb -> 595.03kb (20.89%)

/img/logo/logo-icon.png -- 9.17kb -> 5.72kb (37.58%)
/img/icons/cross.png -- 5.22kb -> 3.77kb (27.69%)
/img/icons/settings.png -- 18.66kb -> 13.72kb (26.48%)
/img/icons/dashboard.png -- 12.83kb -> 9.48kb (26.11%)
/img/icons/laptop.png -- 48.74kb -> 37.04kb (24%)
/design/des1.png -- 513.10kb -> 401.58kb (21.73%)
/img/icons/bars.png -- 3.02kb -> 2.39kb (21.02%)
/img/icons/specifications.png -- 6.44kb -> 5.15kb (20.01%)
/img/icons/server.png -- 24.28kb -> 20.02kb (17.55%)
/img/icons/router.png -- 73.80kb -> 62.20kb (15.71%)
/img/icons/database.png -- 30.08kb -> 27.45kb (8.75%)
/img/logo/logo-all.svg -- 3.71kb -> 3.46kb (6.76%)
/img/svg/warning.svg -- 1.20kb -> 1.16kb (3.09%)
/img/svg/undefined.svg -- 1.92kb -> 1.88kb (2.34%)

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

Author: ImgBotApp