Add comprehensive analytics tracking for all base images management features to measure adoption and usage.

Implementation Details:

• Add analytics event constants and implementations using useAnalytics hook
• Track all base images modal interactions and outcomes
• Include error types in failure events for debugging
• Follow existing analytics patterns from watched images feature

Events to Implement:
1. BASE_IMAGES_MODAL_OPENED - When user clicks "Base images" in dropdown
2. BASE_IMAGE_SUBMITTED - When user submits form to add base image
3. BASE_IMAGE_ADD_SUCCESS - When POST /v2/baseimages succeeds
4. BASE_IMAGE_ADD_FAILURE - When POST /v2/baseimages fails (include errorType property)
5. BASE_IMAGE_REMOVED - When DELETE /v2/baseimages succeeds

Acceptance Criteria:

• All events fire at the correct times in the user flow
• Error type included in failure events (INVALID_IMAGE_NAME, NO_VALID_INTEGRATION, SCAN_FAILED, DUPLICATE_PATTERN)
• Events follow naming convention consistent with watched images events
• Events are properly tracked in Amplitude
• No PII or sensitive data included in event properties