publish discovery for sensors BLE once per run, add ble white and black list

Avoid publishing auto discovery on a time basis
publish auto discovery only one time per BLE sensor
add BLE white and black list implementation
set black list
mosquitto_pub -t home/OpenMQTTGateway/commands/MQTTtoBT/set -m '{"black-list":["012314551615","4C6577889C79","edfrgtyjulik"]}'
set white list
mosquitto_pub -t home/OpenMQTTGateway/commands/MQTTtoBT/set -m '{"white-list":["012314551615","4C65A5553C79","edfrgtyjulik"]}'

lib/pubsubclient/src/PubSubClient.h

@@ -22,8 +22,10 @@
 #endif
 
 // MQTT_MAX_PACKET_SIZE : Maximum packet size
-#ifndef MQTT_MAX_PACKET_SIZE
-#define MQTT_MAX_PACKET_SIZE 128
+#if defined(ESP8266) || defined(ESP32) || defined(__AVR_ATmega2560__) || defined(__AVR_ATmega1280__)
+  #define MQTT_MAX_PACKET_SIZE 1024
+#else // boards with smaller memory
+  #define MQTT_MAX_PACKET_SIZE 128
 #endif
 
 // MQTT_KEEPALIVE : keepAlive interval in Seconds