Better support for Kiwi Browser (Chromium browser for Android with extension support)

[WofWca]

I haven't really tested it much on mobile. I remember at least that in Kiwi browser the popup doesn't connect to the content script because it queries the current tab, but the popup itself is the current tab. See https://github.com/WofWca/jumpcutter/compare/popup-separate-tab

Also UX may suck. Not sure if there is a good way to improve it.

https://extensionworkshop.com/documentation/develop/differences-between-desktop-and-android-extensions/

[WofWca]

On Firefox Nightly for Android it's working OK-ish, no?

[WofWca]

Firefox for Android is about to properly support extensions:
https://blog.mozilla.org/addons/2023/08/10/prepare-your-firefox-desktop-extension-for-the-upcoming-android-release/

[WofWca]

Ok, 1.27.4 and 1.27.5 now support Firefox for Android, and pretty well. The popup there actually connects to the current tab properly.

I am not sure whether we want to improve things for Kiwi browser as well.