feat: Liquid glass icons support

[hharkovenko]

With ios 26 beta we need to add new asset (folder with .icon extension) to be able to customize how liquid glass effect is applied on icon.
Whole logic is copied from apple's icon composer app, which creates .icon asset with provided settings.

The most controversial part is that we need to add this asset as reference into xcode project so it gets added to app bundle, which requires generation of unique identifiers for our asset and adding them to project.pbxproj. I tested my logic with Xcode version 26.0 beta 4, and it works completely fine for me.
We also have a backward compatibility I tried using Xcode Version 16.4 (16F6), and looks like added .icon asset has no effect.
Xcode 16.4 screenshot

Xcode 26 beta screenshot

[thebitguru]

With iOS 26 now out, it would be great to review and incorporate these changes. Unfortunately, I am not qualified to do this. @MarkOSullivan94, any chance you might be able to review it soon?

[felixkriechbaum]

I just tried it with your commit, but unfortunately it doesn't quite work. When I have an icon with a border (e.g. a banner at the top), the icon is ‘scaled down’ with a white frame. But otherwise it works great no errors and really quickly.

Check the screenshot below:

[chaos123x]

Hi. I made that code according to icon composer beta, as well as beta Xcode. I'll try to check if there were any changes with release versions and let you know

I just tried it with your commit, but unfortunately it doesn't quite work. When I have an icon with a border (e.g. a banner at the top), the icon is ‘scaled down’ with a white frame. But otherwise it works great no errors and really quickly.

Check the screenshot below: