feat: option to (partly) prevent syncing and translation

[hphoeksma]

Fixes: #31

[gradinarufelix]

Sorry for the long delay. I had a look at it now and I like the idea.

My only question is: do you think it is enough to just test the parent node? In my opinion, it has to be recursive. In other words, once I set this option on a content node, it disabled translations for all content nodes below to the n-th layer. Otherwise, you could have the following case:

• Document Node
• • Content Collection
• • • Button Group
• • • • Button

If you enabled preventTranslation on the collection, it would hold for the ButtonGroup but not for the Button.

Am I right here or did I misunderstand something in your code?

[hphoeksma]

Hmm... the idea was that once a collection is marked as prevented, nothing in that collection is translated. But it could be I did not test / need it recursively...