Get listing performance metrics

Returns numerical KPI data for a single listing, including listing-level metrics and market-level comparison data. Metrics include occupancy, revenue, ADR, RevPAR, adjusted occupancy, base price ratio, min prices (Days at Minimum Price), and last booked date. **Response Structure:** - **listing_level**: Raw metric values from the listing's own historical data. DFD (Days From Date, i.e. days relative to today)-based metrics have nested objects keyed by DFD string. Non-DFD metrics (`bp_ratio`, `last_booked_date`) are scalar values. STLY (Same Time Last Year) comparisons are stored as `stly_<metric_name>` keys. - **market_level**: Raw market comparison values from portfolio/market engine data. Only includes metrics with market comparison (occupancy, adjusted_occupancy, adr). **Useful Comparisons:** - **Listing vs Market:** Compare `listing_level[metric][dfd]` with `market_level[metric][dfd]` at the same DFD (Days From Date) for occupancy/ADR to gauge pricing position. - **Listing vs STLY:** Compare `listing_level.revenue[dfd]` with `listing_level.stly_revenue[dfd]` for year-over-year growth. - **bp_ratio:** > 1 means priced above recommendation, < 1 means below. - **min_prices:** Percentage of days at minimum price per future window. High values suggest a base price review. **DFD (Days From Date) Keys:** Negative = past, Positive = future. Keys are strings. Default set: `-999, -90, -60, -45, -30, -21, -15, -7, 1, 2, 3, 7, 10, 15, 21, 30, 45, 60, 90, 120, 180, 240, 300, 360`. Current-month metrics also include `-997`. `min_prices` uses only: `7, 15, 21, 30, 45, 60, 90`.