Add a progress bar & update history log

[jimmysofat6864]

When updating the filters, it takes a really long time and I was hoping there would be an ETA or something so I can tell how long it will take to refresh filters. For example, on my iPhone 7 it takes about 6 minutes to refresh filters. And sometimes I don’t know if it does it successfully or fails without watching it for those 7 minutes. It would be nice to have an estimate or a refresh history that tells me when it was updated and if it was updated successfully because sometimes it fails on my iPhone and I fail to notice because the refresh fail message only shows up for 2 seconds before disappearing.

[Versty]

@jimmysofat6864 I personally would love this feature to be added.
In addition, we have future plans to improve filter update times.