Adds support for exporting animations for foreground models. It's not
perfect and doesn't handle the Jak 2/3 animations very well in some
cases (scale can often get messed up, especially for the LZO compressed
ones, I have no idea what is going on with the data in those art groups
sometimes, so that'll have to be revisited later...), but it does a
decent job on Jak 1.
Additionally, the `build-actor` tool has also been changed to support
setting the `master-art-group-name` and `master-art-group-index` fields
to allow for custom art groups to link their animations to a different
master art group, which lets you add custom animations to vanilla art
groups.
Hat Kid
e6260e48ab