Add metadata configuration in the preferences

With Inkscape it is already possible to set metadata
for each document. And that is a good thing to be able
to do so.

But if one has many documents, in the same context,
in a raw or all the time, it's tedious to fill the
metadata again and again and it's error prone.

A possible solution to that would be to add a software-wide
metadata configuration in the preferences. And when a new
document is created, it would be initialized with the software-wide
metadata if those are present. Then the metadata present on
the document could still be modified, just like they are today,
on a per-document basis.

Would you find it useful too? Would it be possible to implement?