[ImgBot] Optimize images

*Total -- 52,303.23kb -> 21,751.92kb (58.41%)

/doc/header_gif_joined_updated.gif -- 29,154.71kb -> 3,671.53kb (87.41%)
/flutter-android-ios-app/notion_ai_my_mind/android/app/src/main/res/mipmap-hdpi/ic_launcher.png -- 4.06kb -> 2.47kb (39.1%)
/flutter-android-ios-app/notion_ai_my_mind/android/app/src/main/res/mipmap-xhdpi/ic_launcher.png -- 5.83kb -> 3.57kb (38.7%)
/flutter-android-ios-app/notion_ai_my_mind/android/app/src/main/res/mipmap-xxxhdpi/ic_launcher.png -- 16.79kb -> 10.35kb (38.35%)
/flutter-android-ios-app/notion_ai_my_mind/android/app/src/main/res/mipmap-xxhdpi/ic_launcher.png -- 10.80kb -> 6.66kb (38.32%)
/flutter-android-ios-app/notion_ai_my_mind/android/app/src/main/res/mipmap-mdpi/ic_launcher.png -- 2.29kb -> 1.48kb (35.65%)
/doc/header_gif_joined.gif -- 17,011.49kb -> 12,204.64kb (28.26%)
/doc/getting_cookie.png -- 32.33kb -> 26.43kb (18.23%)
/doc/settings_howto.png -- 16.43kb -> 13.96kb (15.08%)
/doc/options_python.png -- 21.99kb -> 18.81kb (14.44%)
/doc/add_image.gif -- 1,141.95kb -> 1,073.92kb (5.96%)
/doc/add_website.gif -- 890.20kb -> 846.37kb (4.92%)
/doc/add_text.gif -- 781.70kb -> 743.87kb (4.84%)
/doc/header_gif_search.gif -- 2,563.19kb -> 2,490.89kb (2.82%)
/doc/header_adding_url_example.gif -- 649.47kb -> 636.97kb (1.92%)

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

Author: ImgBotApp