tdf#155238: Reimplement how ListAutoFormat is stored to ODF
This reimplements commits
6249858a8972aef077e0249bd93cfe8f01bce4d6
(sw: ODT import/export of DOCX's paragraph marker formatting,
2022-12-19) and
209dce614c43f63f63f5b42a746665c0ec1cbfe3 (sw: fix
ODT import of paragraph marker formatting, 2022-12-20).
Instead of using an empty trailing span for the ListAutoFormat data,
introduce a new loext:marker-style-name attribute for text:p element,
referencing a text autostyle.
The problems with the previous implementation were that (1) it was
impossible (or very difficult) to disambiguate several empty trailing
spans, in case it was needed; and (2) this was incompatible change,
with other ODF implementations treating the trailing span normally.
I couldn't manage to incorporate the attribute to paragraph autostyle,
because of problems referencing different autostyles one from another,
so put it directly to the paragraph attributes.
Change-Id: I33473147f1f774c24cbbc57bf0c4f3a1d83ce5bc
Reviewed-on: https://gerrit.libreoffice.org/c/core/+/151645
Tested-by: Jenkins
Reviewed-by: Mike Kaganski <mike.kaganski@collabora.com>