feat(plot): Figure with stacked rows and a synchronised x axis

include/plot/plot.hpp

@@ -49,6 +49,7 @@
 #include <plot/plot/annotation.hpp>
 #include <plot/plot/axis.hpp>
 #include <plot/plot/cursor.hpp>
+#include <plot/plot/figure.hpp>
 #include <plot/plot/grid.hpp>
 #include <plot/plot/legend.hpp>
 #include <plot/plot/measure.hpp>