add per-game accuracy and outcome table to stats/notifications

Games-of-period responses can now include a per-game breakdown
(include_games) with Lichess post-analysis accuracy, plus which side
the tracked player was on and their rating change for that game.

- lichess_client.py requests accuracy=true from Lichess; stats_service
  computes per-mode average accuracy and builds GameRow entries
  (tracked_is_white, tracked_rating_diff) for blitz/rapid/classical
- /games/{username}/period gained an include_games query param
- formatters.py renders a column-aligned monospace table per game:
  outcome circle (win/loss/draw relative to the tracked player),
  rating change, accuracy, names/ratings, result — for today/yesterday
  and periodic notifications; week keeps an aggregate accuracy line
- usernames are Markdown-escaped before formatting since messages are
  now sent with parse_mode='Markdown'

LichessClientTG_bot/lichess_api.py

@@ -98,7 +98,7 @@ class LichessAPI:
             logger.error(f"Error getting week stats: {e}")
             return None
     
-    async def get_games_period(self, username: str, since: int, until: int, rated_only: Optional[bool] = None) -> Optional[Dict[str, Any]]:
+    async def get_games_period(self, username: str, since: int, until: int, rated_only: Optional[bool] = None, include_games: bool = False) -> Optional[Dict[str, Any]]:
         """Get games for a specific period"""
         await self.rate_limiter.wait_if_needed()
         try:
@@ -106,6 +106,8 @@ class LichessAPI:
             params = {"since": since, "until": until}
             if rated_only is not None:
                 params["rated_only"] = "true" if rated_only else "false"
+            if include_games:
+                params["include_games"] = "true"
             logger.info(f"🔍 LichessAPI.get_games_period: URL={url}, params={params}")
             
             async with aiohttp.ClientSession() as session: