Add atlas-lsp module implementing LSP for Atlas Stack Language
and graph URI documents. Provides real-time editor support
including diagnostics, completions, hover, semantic tokens,
code actions, document symbols, and go-to-definition.

Two server variants:
- AslLspServer for standalone ASL expressions
- UriLspServer for graph API URIs with embedded expressions

Key components:
- AslDocumentAnalyzer: expression analysis with typed parameter
  diagnostics, word completions, glossary integration, format/
  normalize/compress code actions, and semantic highlighting
- UriDocumentAnalyzer: URI-aware wrapper that parses query
  parameters, delegates expression analysis to ASL, and shifts
  positions between raw/decoded/URI coordinate spaces
- Glossary: JSON-driven metric and tag key documentation for
  hover and completion enrichment
- AslTokenTypes: semantic token type mapping for LSP

Java classes are used for LSP4j server interfaces due to
annotation interop requirements with the LSP4j framework.

Includes a Monaco-based test client for browser testing.

Removed the TODO section outlining future enhancements and features.