A. Yes, although it's complicated and not well-documented. You can find examples to copy and paste in PowerShell's installation folder. Within the shell, run
CD $pshome and look for the ".format.ps1xml" files. Browse through one of those files in Notepad to find a TableControl to copy. Don't modify the Microsoft-provided files—doing so will invalidate them. After you've constructed your XML file, load it into the shell using the Update-FormatData cmdlet. Doing so only affects the current shell session, so you'll need to do that every time you open the shell. If it's something you want to use every time, put it in a profile script.
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