rm: event-queues: Add details for new DG attributes

[doanac]

The device-gateway now includes DeviceGroupId in every event. It also now sends an event every time a device is seen.

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[doanac]

@caiotpereira - this is in production and should be the main changes you were needing.

[kprosise]

lgtm

[doanac]

rebased on latest main