Is it possible to sync Bangle.js 2 time to smartphone time?

@jeffmer I notice you've got a getGattforCentralServer in there. Did you ever implement that in your own server?

Right now as I know the JS implementation of Bluetooth Central can only deal with one connection, which is handled with a global m_central_connection variable. As a quick hack I guess we could set that to the same as m_peripheral_connection with a function, but the best solution would be to store the handle in the BluetoothGattServer structure and then we could interface with >1 central device at the same time