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>

examples/ucxl_example.rs

@@ -0,0 +1,5 @@
+
+
+fn main() {
+    let context = ucxl::Context::from(ucxl://any:developer@chorus:website-redesign/#/db/connection/credentials).expect("Failed to create UCXL context");
+}