[mirotalksfu] - extend email notification 4 widget

.env.template

@@ -240,6 +240,10 @@ WIDGET_SUPPORT_ONLINE_TEXT=We are online           # Online text
 WIDGET_SUPPORT_OFFLINE_TEXT=We are offline         # Offline text
 WIDGET_SUPPORT_POWERED_BY=Powered by MiroTalk SFU  # Powered by text
 
+# Widget Alert Notifications
+WIDGET_ALERT_ENABLED=false                         # Enable alert notifications (true|false)
+WIDGET_ALERT_TYPE=email                            # Alert notification type (email) need EMAIL_ALERTS_ENABLED=true and configuration
+
 # App
 UI_LANGUAGE=en                                    # Interface language (en, es, fr, etc.)
 APP_NAME=MiroTalk SFU                             # Application name