Initial commit - UCXL VS Code extension

- Added UCXL VS Code extension with syntax highlighting
- Implemented language configuration and grammar definitions
- Created extension package with examples and documentation
- Added syntax highlighting for UCXL code structures

🤖 Generated with [Claude Code](https://claude.ai/code)

Co-Authored-By: Claude <noreply@anthropic.com>

LICENSE.md

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+MIT License
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+Copyright (c) 2025 Anthony Rawlins
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+Permission is hereby granted, free of charge, to any person obtaining a copy...