move my bt experiment into its own repo (about to remove ttn)

lib/BluetoothOTA/src/BluetoothUtil.h

@@ -0,0 +1,21 @@
+#pragma once
+
+#include <Arduino.h>
+#include <BLEDevice.h>
+#include <BLEServer.h>
+#include <BLEUtils.h>
+
+
+// Now handled by BluetoothUtil.cpp
+// BLEService *createDeviceInfomationService(BLEServer* server, uint8_t sig, uint16_t vid, uint16_t pid, uint16_t version);
+
+// Help routine to add a description to any BLECharacteristic and add it to the service
+void addWithDesc(BLEService *service, BLECharacteristic *c, const char *description);
+
+void dumpCharacteristic(BLECharacteristic *c);
+
+/** converting endianness pull out a 32 bit value */
+uint32_t getValue32(BLECharacteristic *c, uint32_t defaultValue);
+
+void loopBLE();
+BLEServer *initBLE(std::string devName);