interface view: Show text caret offset
requested to merge michaelweghorn/accerciser:michaelweghorn/interface_view_show_text_caret_offset into master
- Port to using gi.repository.Atspi to retrieve information displayed in the "Text" interface in Accerciser
- extend information shown to also display the caret offset
See the single commit messages for more details.
Sample demo screencast (showing caret offset in a paragraph in LibreOffice getting updated when caret moves): 2024-11-30_20_screencast_accerciser_text_caret.mkv