"Generate Getter" quick-fix on fields does not copy XML documentation

This is somewhat inconsistent with the "Encapsulate Field" refactoring
which nicely copies comments on the field, too. Would be nice to have
this in the quick-fix, too (now, I have to use the refactoring, as this
is quicker than the quick-fix plus manually copy/pasting the comments.

Cheers,
Philipp