Flow check for containing directory

For user flows it would be very useful to add a check that can verify if a file event was performed on a file inside of a given directory.

Basically what we have shown in the [mockups of the preannouncement](

![image](

@blizzz I guess this only makes sense for user scope? I don't remember exactly how those were implemented, if we assume a flow operation is triggered on file change, will the flow be executed only for file changes by the user who has configured or also if someone else changes a shared file that is owned by the user?