User is able to download logs from a given day.

* `shelly logs get [date]` will download logs from [date].
* `shelly logs download [date]` will download logs from [date].
* showing latest application logs is moved to `shelly logs latest`.

[#39850523]
Merge pull request #83 from shellycloud/39850523-download-logs-for-a-given-day

User is able to download logs from a given day.