Import/Export of recipe sets using exchange file

[christianlupus]

Describe the solution you'd like

It would be nice to allow to migrate some recipes between different server instances using some sort of an exchange file. That means, a file is generated from a certain set of recipes. On the destination machine, the file can be read and imported into the cookbook and thus a manual sync/archival was possible.

Rough idea: Create a ZIP file from all recipes.

Describe alternatives you've considered
Possible reference to #2309 as federation might be an alternative to exchanging the packed content in the background and continuously keeping sync between these.

[christianlupus]

This was extracted from #1665 as part of the requests.