investigate nanosecond time for query time command

[Franziska-Mueller]

When querying the node time with qubic-cli the returned nanoseconds in the received packet are always 0:

The issue seems to originate on the node side, when processing SPECIAL_COMMAND_QUERY_TIME (qubic.cpp around line 1280). Assuming that updateTime() works as expected on the node, the EFI_TIME that's converted to UtcTime should contain nanoseconds.

[philippwerner]

If I remember correctly, this is because GetTime() in the EFI implementation running on our nodes does not return time with nanosecond accuracy.