[FEATURE] Add option to export json

[mews-se]

Title

Since its possible to import, it should also be possible to export

Platform

Desktop app (Windows, Linux, and macOS)

Is it related to an issue?

As of today you have to export all hosts one by one, perhaps adding a export option next to the import one would be useful?

The Solution

New function to export all hosts (and/or settings) to be able to import to a fresh install

Additional Context

No response