[mirotalksfu] - add global participant limit per room

.env.template

@@ -371,8 +371,14 @@ STATS_ENABLED=true                                # Enable usage statistics (tru
 STATS_SRC=https://stats.mirotalk.com/script.js    # Stats script URL
 STATS_ID=41d26670-f275-45bb-af82-3ce91fe57756     # Stats tracking ID
 
+# -----------------------------------------------------
+# 11. Global Moderation Configuration
+# -----------------------------------------------------
+
+ROOM_MAX_PARTICIPANTS=1000                        # Maximum participants per room
+
 # ----------------------------------------------------
-# 11. Mediasoup Configuration
+# 12. Mediasoup Configuration
 # ----------------------------------------------------
 
 MEDIASOUP_ROUTER_AUDIO_LEVEL_OBSERVER_ENABLED=true     # Enable audio level observer (true|false)