Get-UserProfileSize - rework process block a bit

[saladproblems]

Currently Get-UserProfileSize iterates one by one through each computer and doesn't return output until the last one is complete, when it outputs the result array in its entirety. I suggest skipping the array altogether and just letting each PSObject hit the pipeline as it completes.

Also, the logic for listing profiles is performed in a separate command from querying the profile sizes. If that were moved into the script block, you could drop the foreach-object and allow it to just use Invoke-Command against $ComputerName, allowing it to use Invoke-Command built-in asynchronous query ability.