Modify new BT config using MQTT (#1259)

* Move BTConfig_default to ZgatewayBT.ino as BTConfig_init()

* Remove unused function declaration & typo

* Move bleconnect outside of ifdef ESP32

* Add new parameters to json payload on MQTTtoBT/config
And move them to function BTConfig_fromJson()

new parameters: [presenceEnable, presenceTopic, presenceUseBeaconUuid, extDecoderEnable,
extDecoderTopic, filterConnectable, pubKnownServiceData,
pubUnknownServiceData, pubKnownManufData, pubUnknownManufData,
pubServiceDataUUID, pubBeaconUuidForTopic]

* Add ignoreWBlist as new configuration parameter

* Keep hasspresence keyword (do not use presenceEnable)

* Documentation

* Typos & Optimizations arround RemoveJsonPropertyIf

* Template for BT config update

* Ensure BTConfig.minRssi sign does not matter

* Report configuration change on topic /commands/BTtoMQTT/config

# Conflicts:
#	main/ZgatewayBT.ino

* Add BT config bool commands (init, load, erase & save) to persist config parameters

* Documentation

* Fix pre-compilation issue

* Fix Code Format

* Use Preference only for ESP32

* Update Doc

docs/integrate/openhab2.md

@@ -11,7 +11,7 @@ You need to set `OpenHABAutoDiscovery` to true into `config_mqttDiscovery.h`
 `#define OpenHABDiscovery true`
 
 ::: tip
-If you are connecting to BLE devices it is highly recommended to set `BLE_FILTER_CONNECTABLE` to `1` in `config_BT.h`. Otherwise you may encounter incomplete data.
+If you are connecting to BLE devices it is highly recommended to set `filterConnectable` to `true` in [BT configuration](../use/ble.md#advanced-filter-out-connectable-devices). Otherwise you may encounter incomplete data.
 :::
 
 The things will appear in the inbox of the paperUI, add them and links the channels. You should see them into the control panel for further usage.