Some way to detect folder in Pds format

### Discussed in https://github.com/dlemstra/Magick.NET/discussions/1087

<div type='discussions-op-text'>

<sup>Originally posted by **smoketlt** December  8, 2021</sup>
Some way to detect folder in Pds format in ImageMagick.NET?  At the moment I use dll photoshop from paint.net for these purposes, but it's too cumbersome. Thanx</div>