add: PowerShell file to update image packs

Neko Boi Nickrequested to merge
nekoboinick/degrees-of-lewdity:dolp-update-images-pwsh into dev

I tested it with PowerShell 5 (which comes native in Windows) and with PowerShell 7 (On Linux and Windows).

Also, I created this merge for your 'dev' branch, as I assume that gets later merged into your 'master' branch.

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