Fixing headers for gateway modules (#1554)

* Fixing red squiggles in VSCode/PlatformIO

* Lint issues

main/config_BT.h

@@ -31,6 +31,10 @@ extern bool BTtoMQTT();
 extern void MQTTtoBT(char* topicOri, JsonObject& RFdata);
 extern void emptyBTQueue();
 extern void launchBTDiscovery(bool overrideDiscovery);
+extern void stopProcessing();
+extern void startProcessing();
+extern void lowPowerESP32();
+extern void stateBTMeasures(bool);
 
 #ifdef ESP32
 extern int btQueueBlocked;