Update analytics-controller and adapter interfaces to include changes required when implementing the mobile integration

Technical Details

1. Remove add(middleware: TPlugin): void from AnalyticsPlatformAdapter interface
2. Add onSetupCompleted(analyticsId: string): void to AnalyticsPlatformAdapter interface
3. Update AnalyticsController to call onSetupCompleted after initialization (only if analyticsId is set)
4. Add error handling (try-catch) - adapter failures shouldn't break controller
5. Update tests: verify hook called when analyticsId set, NOT called when not set

Acceptance Criteria

• add method removed, onSetupCompleted(analyticsId: string): void added to AnalyticsPlatformAdapter
• AnalyticsController calls onSetupCompleted after init (only if analyticsId is set) with error handling
• Tests verify hook called when analyticsId set, NOT called when not set, error handling works
• Documentation and CHANGELOG updated