Change the callback functions that receive a ble_gap_conn_desc pointer to instead receive a NimBLEConnInfo reference.
* Add a reason parameter to the server disconnect callback.
* Remove connect and disconnect callback that do not receive info parameters.
* Remove onRead and onWrite Characteristic callbacks that do not receive info parameters.
* Add info parameter to Descriptor onWrite and onRead callbacks.
* Add details to migration guide.
Changes all functions that accept a time parameter to use milliseconds instead of seconds.
* Adds duration input to NimBLEDevice::startAdvertising and NimBLEServer::startAdvertising.
