ocitysmap2-render: reject unsupported output formats
ocitysmap2-render: reject unsupported output formats

Use the new get_compatible_output_formats() method to reject the
unsupported output formats depending on the selected rendering layout.

Signed-off-by: Thomas Petazzoni <a5d87d2bd7c424ee5cbdb4e978635bf653d5a005@enix.org>

maposmatic/ocitysmap,maposmatic/ocitysmap,dittaeva/ocitysmap,dittaeva/ocitysmap,maposmatic/ocitysmap