Anvian's Lib

### Changed - Converted TelemetrySender HttpClient to thread-safe static singleton - Added HTTP request timeout (10 seconds) for telemetry requests ### Added - Added null parameter validation on public APIs - Added Javadoc documentation to CommonMod and Services classes - Added REQUEST_TIMEOUT constant for HTTP requests ### Removed - Removed deprecated sendTelemetryDataLegacy method - Removed unused eventBus parameter from NeoForgeMod constructor - Extracted and removed duplicated directory creation logic ### Improved - Refactored duplicate directory creation into createDirectoryIfNotExists helper method - Enhanced code quality and maintainability - Improved API robustness with input validation - Added comprehensive inline documentation - Port to minecraft 26.1