[DRAFT] auto create translation files

[TumTum]

When I first set up phpunuhi. It was a real effort to create the missing translation files Manuel.
PHPunuhi now asks if the missing file should be created. So you can easily extend the xml file and each command creates the missing file.

@boxblinkracer check if you like the code architecture and the idea.
Then I'll add the PHPUnit tests.

[boxblinkracer]

wow another super cool idea @TumTum

i've just merged your other PRs
ill probably do a release before this years shopware community day
and then ill check out your feature, please give me a bit :)