Add AI Accelerator metrics
Real-time analytics and Historical Stats responses now include the following new metrics: aia_requests, aia_status_1xx, aia_status_2xx, aia_status_3xx, aia_status_5xx, aia_response_usage_tokens, aia_origin_usage_tokens and aia_estimated_time_saved_ms.
Prior change: Refactor product enablement endpoints
Following change: Add Object Storage metrics
