Release v1.5.0

Added

• EngineTrackingInitialize: Central initializer for analytics and bug tracking services
• Nullable Parameters: Optional initialization of analytics or bug tracking individually
• Dartdoc Documentation: Complete public API documentation for all methods and parameters

Enhanced

• Flexible Initialization: Initialize both services, only analytics, or only bug tracking
• Parallel Execution: Optimized Future.wait for maximum performance
• Test Coverage: 17 new tests for centralized initialization scenarios

Changes

• lib/src/engine_tracking_initialize.dart - New centralized initializer class
• test/engine_tracking_initialize_test.dart - Comprehensive test suite
• pubspec.yaml - Version bump to 1.5.0
• CHANGELOG.md - Release notes
• README.md - Updated documentation with examples