Add Metadata to Device Info for compatibility with Neuropixels-CAR plugin

[bparks13]

Originally created in the Neuropixels-CAR plugin here, for the CAR plugin to detect that streams coming from ONIX Source are Neuropixels we need to add some metadata to the device info, as discussed in the issue linked.

It looks like all we need to do is add "neuropixels.adcs" as a metadata field in the DeviceInfo object:

https://github.com/open-ephys-plugins/neuropixels-pxi/blob/ca2e5b317c7d5231086cd249b01ef995d5a7bf54/Source/NeuropixThread.cpp#L1332-L1341