This makes it possible to use component libraries with C++.

Base the commercial license on the Royalty-free license adding clauses pertaining to the fees.

Add clarification that Application may not expose Slint APIs.

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Co-authored-by: Simon Hausmann <simon.hausmann@slint.dev>

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Co-authored-by: Simon Hausmann <simon.hausmann@slint.dev>

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

This is the counter-part, which removes focus from the element if it's currently focused. The window - if focused - may still be focused towards the windowing system.

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"

Make sure the key for the fontdb query -> femtovg font mapping includes
the style (and stretch, for good future measure).

Fixes #5056

A MSRV update is required to update the image crate to 0.25, otherwise
we get link error that are ficed in newer version.
Also other dependency update such as env_logger needs a newer MSRV.

Update to 1.73 because it has functions like `with_borrow` on thread
storage which we already actually use in some platform.

This is also the last release before the the drop of macOs < 10.12
in Rust 1.74

This allows applications to force dark/light mode, as well as determine
which mode is active.

Add extra properties to the `color` type.
- `red`
- `green`
- `blue`
- `alpha`