Indication About Remaining Time of Indexing

Indexing a photo archive can take a while and DPL does not give us any estimated time of arrival yet.

I therefore propose that some kind of indication should be added, be it by number of folders or files taken into account with, if possible, an estimate of the remaining indexing time.

This request already exists. Comments and votes may be added here:

Sorry for the duplication.

@sgospodarenko, can you please merge the two requests?