Add an event inside the render loop that gets evoked just before items are rendered. It should emit a PlotDimensions so users could inject custom code to modify plot objects based on the size and scale of the plot.

An example use case is text whose font size changes based on the zoom level.

This features should be added to ScottPlot 4 and ScottPlot 5.

Thanks GooBad from the Discord #1966 for this idea

GooBad's example: