[ImgBot] Optimize images

*Total -- 172.80kb -> 91.25kb (47.2%)

/web/icons/Icon-maskable-512.png -- 54.21kb -> 21.77kb (59.85%)
/web/icons/Icon-512.png -- 54.21kb -> 21.77kb (59.85%)
/web/icons/Icon-maskable-192.png -- 14.79kb -> 7.11kb (51.93%)
/web/icons/Icon-192.png -- 14.79kb -> 7.11kb (51.93%)
/assets/images/tiles/tile4.svg -- 7.14kb -> 6.82kb (4.41%)
/assets/images/tiles/tile3.svg -- 7.12kb -> 6.81kb (4.36%)
/assets/images/tiles/tile1.svg -- 7.19kb -> 6.88kb (4.31%)
/assets/images/tiles/tile2.svg -- 7.22kb -> 6.91kb (4.3%)
/assets/images/disabled_back.svg -- 0.96kb -> 0.95kb (1.62%)
/assets/images/setting.svg -- 2.19kb -> 2.18kb (0.8%)
/assets/images/disabled_setting.svg -- 2.17kb -> 2.15kb (0.72%)
/assets/images/disabled_restart.svg -- 0.80kb -> 0.79kb (0.37%)

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

Author: ImgBotApp