This commit changes how NanoUI's live data updating system works.
Previously, data for the template was directly gathered in the
ui_interact proc. Now, it is seperated into the proc `ui_data`.
To players, this does absolutely nothing.
To coders, this opens up the potential for a much more complicated and
fancy graphical updating system in the future, because the data is
available on-demand without ever having to call
nanomanager.try_update_ui.
b9abce843d