MTUサイズ交換とBLEスループット
1. Support mtu exchange
2. support loopback, ack and no responese test mode for Android 5.x to 6.0
3. Added BLE device interval time change
4. UUID list:
UUID_SERVICE_BLE_DEVICE_INTERVAL = UUID.fromString("0000e050-0000-1000-8000-00805f9b34fb");
UUID_CHAR_BLE_DEVICE_INTERVAL = UUID.fromString("0000f050-0000-1000-8000-00805f9b34fb");
UUID_SERVICE_BLE_THRUPUT_TEST = UUID.fromString("8832ab08-ba2d-0184-004c-68c08e2190bf");
UUID_CHAR_BLE_THRUPUT_TEST_WRITE = UUID.fromString("361e118a-5524-29b6-0345-b15e12e25b34");
UUID_CHAR_BLE_THRUPUT_TEST_LB = UUID.fromString("361e118a-5524-29b6-0345-b15e12e25b34");
CLIENT_CHARACTERISTIC_CONFIG = "00002902-0000-1000-8000-00805f9b34fb";