Provide an option to sort the mails

### Problem

Currently there's no option so change the sort order of the mails.

### Proposal

Provide the option to define the order of the mails like:
- by date ascendending
- by date descendending

Nice to have:
- by title ascending/descending
- by sender ascending/descending

### Prior Art (Optional)

Implemented in most of the popular mail readers like [Thunderbird](https://www.lifewire.com/thmb/RpYgvuTjV7GSuHC2S_yywI6cGWI=/1500x0/filters:no_upscale():max_bytes(150000):strip_icc()/thunderbird-sort-mail-1173129-5b69de6a08f546039fc68a213c35a61a.jpg).