LJ::Tags::create_usertag — Creates tags for a user, returning the keyword ids allocated.
LJ::Tags::create_usertag(
uobj, kw, opts)
;
uobj. User object to create tag on.
kw. Tag string (comma separated list of tags) to create.
opts. Optional; hashref, possible keys being 'display' and value being whether or not this tag should be a display tag and 'parenttagid' being the tagid of a parent tag for hierarchy. 'err_ref' optional key should be a ref to a scalar where we will store text about errors.