align /getgamers and stats-message tables, unify stats body into one code block

- /getgamers: column-aligned monospace table (username, ratings, period).
- Per-mode stats (rating/wins/losses/draws): column-aligned block, dropped
  the meaningless multi-game average accuracy row.
- format_stats_response/format_period_notification now wrap the whole
  message in a single markdown code block instead of alternating
  plain-text headers and separately-fenced tables.
- Rating row gets an emoji prefix to match the other three rows, so
  Telegram's monospace rendering keeps all values in the same column.

LichessClientTG_bot/bot.py

@@ -784,16 +784,8 @@ class LichessBot:
                 })
                 logger.info(f"Added gamer {gamer['username']} with N/A ratings due to error")
         
-        # Create text message with stats
-        text_lines = []
-        for gamer in gamers_data:
-            text_lines.append(
-                f"<b>{gamer['username']}</b>  "
-                f"⚡ {gamer['bullet']}  🔥 {gamer['blitz']}  🐇 {gamer['rapid']}{gamer['period']}"
-            )
-        
         logger.info(f"getgamers: prepared {len(gamers_data)} gamers for display")
-        
+
         # Check if we have any gamers to display
         if not gamers_data:
             logger.warning(f"getgamers: No gamers data prepared, but gamers list was not empty. This should not happen.")
@@ -803,8 +795,9 @@ class LichessBot:
                 pass
             await update.message.reply_text(t('no_gamers', lang))
             return
-        
-        gamers_text = t('select_active_gamer', lang) + "\n".join(text_lines)
+
+        gamers_table = StatsFormatter.format_gamers_table(gamers_data)
+        gamers_text = t('select_active_gamer', lang) + "<pre>" + gamers_table + "</pre>"
         
         logger.info(f"getgamers: message length: {len(gamers_text)} characters")