GeoEngineDS API Middleware

Middleware for Express to auto-generate REST APIs from SQL queries against GeoEngineDS (a geo-spatial data service). Version 3.8.9 requires Node >= 8.9.0 and uses ESM imports. Supports dynamic SQL assembly with query parameterization for injection prevention, multiple output formats (origin, GeoJSON), and lifecycle hooks (beforeSend, afterSend, onError). Differentiator: maps data source IDs to SQL endpoints declaratively with built-in SQL injection protection using context.format.