Add Liquid Glass icon support to App Clips

[kyryloren]

Summary

Refs #80.

• Use the effective Expo .icon filename for the App Clip's CFBundleIconName and Debug/Release app-icon build settings.
• Copy the complete Icon Composer bundle into the clip directory and register it with the clip's Xcode group and Resources build phase, using the clip's target UUID.
• Keep the existing AppIcon, asset-catalog, and plist behavior when a .icon is not configured, including PNG and light/dark/tinted configurations. No new required options or dependencies.
• Bump the package version to 0.9.2.

Validation limits

• The .icon archive contains 120×120 and 152×152 compatibility PNGs. No standalone 167×167 PNG was emitted; both compiled catalogs contain universal 1024×1024 iPhone/iPad icon renditions.
• These local checks verify native compilation, resource registration, and compiled icon metadata. The archives were unsigned; EAS submission and App Store Connect acceptance have not been validated.
• Verification used disposable apps outside the repository; no new test runner configuration is included.

[nathan-ahn]

Thank you for your contribution! This looks great.