[ImgBot] Optimize images

*Total -- 565.56kb -> 485.96kb (14.07%)

/resources/icons/Dracula.svg -- 2.70kb -> 0.95kb (64.77%)
/resources/icons/Dracula_200x200.png -- 1.45kb -> 0.96kb (33.63%)
/screenshot.png -- 561.42kb -> 484.05kb (13.78%)

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

Author: ImgBotApp