ext-xdg-shell(rml-compositing): Toplevel::set_size + server-side decorations

- Toplevel::set_size(w,h): expose wlr_xdg_toplevel_set_size (async configure;
  0 = client picks). Lets the window field size a client to its tile.
- Advertise xdg-decoration and force SERVER_SIDE when the RML field draws chrome
  (create(prefer_server_side_decorations), wired from host-bin's
  --rml-compositing) so clients drop their own CSD titlebars; classic path keeps
  CSD. The mode is applied only once the xdg surface is initialized (on the
  surface commit / request_mode), avoiding a wlr_xdg_surface_schedule_configure
  assertion when the client creates the decoration before its initial commit.

0 files changed, 0 insertions, 0 deletions