[Feature Request] Sort by downloads descending

### Before you submit

- [x] I have searched the issue tracker for [open](https://github.com/Droid-ify/client/issues) and [closed](https://github.com/Droid-ify/client/issues?q=is%3Aissue+is%3Aclosed) issues that are similar to the feature request I want to file, without success.
- [x] I'm not requesting app support for a specific repo — that's up to repo maintainers
- [x] I understand this might not get built (Droid-ify is maintained by a single person)

### What's the problem?

If there are several apps which do what i want, across different repos, I usually want to install the one with the most downloads (not all repos expose this, but some do).
I don't use this always, but I think it's a good heuristic, because a lot of downloads usually means that the app has been around for a longer time and probably has a bigger community than something with few downloads.
I would like to sort search results by download count descending.

### What would help?

A sort option by download counts descending.
Once enabled, it would show the results like this:
```

---

```
Instead of divider, maybe two tabs at top would also be good.

### Alternatives?

Current behaviour

### Anything else?

N/A