RAIM trajectory and world map

POST /v1/raim/trajectory: one position over up to 72 h (the length of an AUGUR scenario) with satellite geometry (passes[] with azimuth, elevation and status per epoch) for plotting. POST /v1/raim/map: unavailability minutes on a lat/lon grid for a UTC day and HAL, the FAA "24-hour worldwide RAIM unavailability" product on demand (start at 00:00Z of the day, hours 24, grid_deg 2, lat_min, lat_max, hal_nm; response outage_min[nlat*nlon], row-major from lat0 northwards and lon0 = -180 eastwards, and coverage with pct_cells_100, max_outage_min and top_cells). The map counts every unavailable minute per cell, as the FAA plot does; the profile's dispatch rule applies only when min_outage_minutes is sent. To match the FAA plot use profile: "faa-c129", step_seconds: 60, hal_nm: 0.1 or 0.3; a past day picks up the almanac and NANUs of that day. Both take the same tuning fields as predict. Reference data: GET /v1/raim/almanac (GPS and Galileo almanac status, NANU and NAGU sets), GET /v1/raim/nanu, GET /v1/raim/nagu, GET /v1/raim/phases, GET /v1/raim/profiles.