[ImgBot] Optimize images

*Total -- 96.69kb -> 65.30kb (32.46%)

/docs/assets/GitHub-Mark-Light-64px.png -- 2.28kb -> 1.32kb (42.15%)
/docs-theme/assets/GitHub-Mark-Light-64px.png -- 2.28kb -> 1.32kb (42.15%)
/docs/assets/meta.png -- 35.74kb -> 22.18kb (37.94%)
/docs-theme/assets/meta.png -- 35.74kb -> 22.18kb (37.94%)
/docs/favicon.png -- 9.28kb -> 8.10kb (12.67%)
/docs-theme/favicon.png -- 9.28kb -> 8.10kb (12.67%)
/docs-theme/assets/logo.svg -- 1.06kb -> 1.06kb (0.09%)
/docs/assets/logo.svg -- 1.06kb -> 1.06kb (0.09%)

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

Author: ImgBotApp