change(ble): Add Time Update service

This adds BLE a characteristic which allows to set the current time. The
time is set in milliseconds since 1.1.1970 as 64 bit value.

Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>
2 jobs for !102 with ble-time-update in 42 seconds (queued for 2 seconds)
latest merge request