Write a script that searches DSFs for items from a specific path

Inspired by [this conversation](https://forums.x-plane.org/index.php?/forums/topic/174121-need-help-reorienting-my-windsock-and-flags-after-downloading-a-file-that-was-supposed-to-sync-them/&do=findComment&comment=1614923), it would be useful to find all occurrences of items from a specific library. 