Search for device by name and add to a group

[merill]

## Create a group to hold devices
$g= New-MgBetaGroup -DisplayName "My Test Device Group" -SecurityEnabled -MailEnabled:$false -MailNickname 'test'

## Find the devices that need to be added
$d = Get-MgBetaDevice -Search '"displayName:Merill"' -CountVariable $count -ConsistencyLevel eventual

$deviceId = $d[0]

## Add the device to the group
New-MgBetaGroupMemberByRef -GroupId $g.Id -OdataId "https://graph.microsoft.com/v1.0/directoryObjects/$deviceId"