Feature request: Start with nothing then specify folders for including

[dreamcat4]

Hi there,
The exclude folders makes sense. But for me I need to manually include only those fewer folders. For which I need to index. Hopefully this kind of a request also makes sense to other people.

Can this be done? I am hoping also [somehow] for there to be a future possibility of eventually adding a context menu entry, right click the folder in sidebar. To access that future hook in a convenient way.