Add KuiklyUI - Kotlin Multiplatform based cross-platform UI framework

[wwwcg]

Description

This PR adds KuiklyUI, a high-performance cross-platform UI framework built on Kotlin Multiplatform technology.

Why KuiklyUI?

• Kotlin Multiplatform: Built on KMP technology with 100% Kotlin codebase
• Cross-platform: Write once, run on Android, iOS, HarmonyOS, Web, and Mini Programs
• Native performance: No WebView overhead, true native rendering
• Production proven: Battle-tested in large-scale applications
• Dynamic updates: Support for hot reload and dynamic content delivery

Placement

Added to Development Alternatives section, under Kotlin and alongside Flutter, as it represents a modern KMP-based alternative for cross-platform Android development.

Checklist

• I have read and understood the contribution guidelines
• The library is actively maintained
• The library supports Android target
• The library has documentation/README