move BleScanner to seperate lib

lib/BleScanner/src/BleInterfaces.h

@@ -0,0 +1,13 @@
+#pragma once
+#include <NimBLEDevice.h>
+
+class BLEScannerSubscriber {
+  public:
+    virtual void onResult(NimBLEAdvertisedDevice* advertisedDevice) = 0;
+};
+
+class BLEScannerPublisher {
+  public:
+    virtual void subscribe(BLEScannerSubscriber* subscriber) = 0;
+    virtual void unsubscribe(BLEScannerSubscriber* subscriber) = 0;
+};