[ImgBot] Optimize images

*Total -- 112.85kb -> 93.17kb (17.44%)

/app/src/main/res/drawable/twouser.png -- 64.76kb -> 47.77kb (26.24%)
/app/src/main/res/mipmap-xxxhdpi/ic_launcher.png -- 10.40kb -> 9.54kb (8.33%)
/app/src/main/res/mipmap-xxhdpi/ic_launcher.png -- 7.72kb -> 7.27kb (5.88%)
/app/src/main/res/drawable/oneuser.png -- 21.64kb -> 20.45kb (5.51%)
/app/src/main/res/mipmap-hdpi/ic_launcher.png -- 3.51kb -> 3.43kb (2.14%)
/app/src/main/res/mipmap-xhdpi/ic_launcher.png -- 4.81kb -> 4.71kb (2.07%)

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

Author: ImgBotApp