We can't just do `s/#\[no_mangle]/#[unsafe(no_mangle)]/g`
because the version of cbingen we use doesn't understand the unsafe
attribute yet.
Part of #7998
Destroy means we need to exit the event loop.
And android_main will be called again from another thread, so we need to
support reseting the proxy
There is also a bug in the timer when exiting the app that this worked
around
Fix#6626
The android-activity 0.5 no longer works with Rust 1.78 because it
asserts with
> slice::from_raw_parts requires the pointer to be aligned and non-null, and the total size of the slice not to exceed `isize::MAX`
Note that the documentation is build with the 05 feature because it also
build the winit backend crate in the same command that still depends on
android-activity 0.5 via winit
Updated the version from 1.1 to 1.2
Renamed the header to "Slint Royalty-free Desktop, Mobile, and Web Applications License"
Added definition of "Mobile Application" and grant of right
Moved "Limitations" to 3rd section and "License Conditions - Attributions" to 2nd section
Added flexibility to choose between showing "MadeWithSlint" as a dialog/splash screen or on a public webpage
Moved the para on copyright notices to section under "Limitations"
Move this back out of render() again and make it stateful in the renderer. Reduces the amount of book-keeping required and it's always the same callback anyway.
