[ImgBot] Optimize images

*Total -- 246.48kb -> 165.94kb (32.68%)

/web/icons/Icon-maskable-512.png -- 20.51kb -> 10.54kb (48.61%)
/macos/Runner/Assets.xcassets/AppIcon.appiconset/app_icon_1024.png -- 100.58kb -> 57.80kb (42.53%)
/macos/Runner/Assets.xcassets/AppIcon.appiconset/app_icon_512.png -- 35.55kb -> 23.23kb (34.66%)
/web/icons/Icon-maskable-192.png -- 5.46kb -> 3.66kb (33.05%)
/macos/Runner/Assets.xcassets/AppIcon.appiconset/app_icon_256.png -- 13.81kb -> 10.22kb (25.97%)
/macos/Runner/Assets.xcassets/AppIcon.appiconset/app_icon_128.png -- 5.55kb -> 4.43kb (20.19%)
/android/app/src/main/res/mipmap-xxxhdpi/ic_launcher.png -- 23.29kb -> 19.23kb (17.44%)
/android/app/src/main/res/mipmap-xxhdpi/ic_launcher.png -- 16.86kb -> 14.21kb (15.69%)
/android/app/src/main/res/mipmap-xhdpi/ic_launcher.png -- 10.54kb -> 9.27kb (12.05%)
/android/app/src/main/res/mipmap-hdpi/ic_launcher.png -- 7.56kb -> 6.90kb (8.72%)
/android/app/src/main/res/mipmap-mdpi/ic_launcher.png -- 4.61kb -> 4.35kb (5.61%)
/macos/Runner/Assets.xcassets/AppIcon.appiconset/app_icon_64.png -- 2.17kb -> 2.09kb (3.29%)

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