feat(macos): add liquid glass effect support

[ahonn]

• add macOS liquid glass support with apply_liquid_glass, clear_liquid_glass
• update macOS dependencies (objc2 family) and expand the AppKit bindings/features needed for liquid glass
• refresh example apps (tao, winit, tauri) to showcase the new API

Tauri expample:

CleanShot.2025-10-21.at.20.49.11.mp4

[socket-security]

Review the following changes in direct dependencies. Learn more about Socket for GitHub.

Diff	Package	Supply Chain Security	Vulnerability	Quality	Maintenance	License
	npm/​@​tauri-apps/​cli@​1.6.3 ⏵ 2.9.0			+3	+3

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[FabianLars]

Thanks for the PR! I didn't read through everything yet but wanted to mention one thing already, i think we should remove the hex compatibility and re-use the Color (rgba) type we also use on the Windows side. I feel like the crate is a bit idk too low-level for this type of abstraction and should stay as small as possible.

Also, to be able to merge later this we'll need a small changefile similar to https://github.com/getcompress/tauri-window-vibrancy/blob/4dc94f183c5bc387c0d9fe2e6fcf3bb298f048db/.changes/clear-vibrancy.md :)

[ahonn]

Thanks for the PR! I didn't read through everything yet but wanted to mention one thing already, i think we should remove the hex compatibility and re-use the Color (rgba) type we also use on the Windows side. I feel like the crate is a bit idk too low-level for this type of abstraction and should stay as small as possible.

Also, to be able to merge later this we'll need a small changefile similar to https://github.com/getcompress/tauri-window-vibrancy/blob/4dc94f183c5bc387c0d9fe2e6fcf3bb298f048db/.changes/clear-vibrancy.md :)

Thanks for the feedback!
I've pushed a commit to remove TintColor and now reuse the Color type. Will add the changefile next.