Add Ubisoft services docs for stats and news

Add reference documentation for Ubisoft services used by Hyper Scape. Includes a new stats page describing profile stats endpoint, player entities (PlayerStats, PlayerLoadout, PlayerBattlepassData, PlayerTutorialProgression), Ubisoft Connect (Club) actions and rewards, and account status endpoints with examples. Also adds a news page documenting profile/space news endpoints, response structure, placements, link targets, polling interval, example payloads, and notes for serving news from the private Scapegoat server.