[ImgBot] Optimize images

*Total -- 211.04kb -> 171.10kb (18.93%)

/images/hardware/aibot.png -- 28.93kb -> 16.99kb (41.29%)
/images/hw/aibot.png -- 28.93kb -> 16.99kb (41.29%)
/images/back_pack_button.svg -- 0.73kb -> 0.59kb (18.36%)
/images/btn-add-comment-off.svg -- 0.76kb -> 0.65kb (14.45%)
/images/btn-add-comment-select.svg -- 0.76kb -> 0.65kb (14.45%)
/images/trashcan.svg -- 3.38kb -> 2.96kb (12.18%)
/images/hardware/firmtech2.png -- 141.17kb -> 126.36kb (10.49%)
/images/trashcan_open.svg -- 4.46kb -> 4.08kb (8.43%)
/images/btn-toggle-comment-off.svg -- 1.25kb -> 1.17kb (6.09%)
/images/btn-toggle-comment-select.svg -- 0.69kb -> 0.66kb (4.26%)

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

Author: ImgBotApp