Cursor and cursor theme improvements
- Support cursor themes and cursor sizes set via gsettings
- Don't show cursor when we've never seen any motion events (this helps some devices that report a pointer device that isn't actually usable)
- Work towards better PhocCursor / PhocSeat switch (helps #231)
- Maove the cursor image handling to
PhocCursor
rather than having it split betweenPhocSeat
andPhocCursor
- Make more
PhocCursor
state private
Closes: #6 (closed)