Created section for language attributes

First template is for converting @langcode to @lang in appropriate
contexts, starting with <abstract>.
Created section for @type to @localtype

Template will need to ennumerate which instances of @type will need to
be converted to @localtype.
Added archref/abstract to skip template
Removed unnecessary line break
Created <addresline> section

First pass at migration strategy for <addressline> outside of
<publicationstmt> and <repository>, the only places it remains.
unitid/@type

Added to @type to @localtype migration