Adding a translator for french union catalog CCFr

As requested in [Zotero Forum](https://forums.zotero.org/discussion/37503) I've built this first version of a translator. 

It still misses somes specific cases but works for > 90% of records I'd say. CCFr catalog is full of JS, not that easy to parse.

Tests are style missing, hope it's not blocking.
add this
```
  var found = false;
  while (row = rows.iterateNext())
  {
    found = true;
    .....
  }

  return found ? items : false;
}
```